Modulation of sodium channels in dorsal root ganglia

ABSTRACT

A novel tetrodotoxin resistant sodium channel is described, along with isolated nucleotides that encode this receptor. Methods for identifying agents that modulate the Na +  current through the receptor are provided, as well as related therapeutic and diagnostic methods.

FIELD OF THE INVENTION

[0001] The present invention relates to a novel tetrodotoxin resistant sodium channel and related nucleotides, as well as screening assays for identifying agents useful in treating acute or chronic pain or other hyperexcitability states. This application is related to U.S. Provisional Application 60/072,990, filed Jan. 29, 1998, U.S. Provisional Application 60/109,402 entitled “Modulation of Sodium Channels in Dorsal Root Ganglia”, filed Nov. 20, 1998 and to U.S. Provision Application 60/109,666, entitled “Differential Role of GDNF and NGF in the Maintenance of Two TTX-Resistant Sodium Channels in Adult DRG Neurons,” filed on Nov. 20, 1998, and is a continuation-in-part of PCT International Application No. PCT/US99/02008, also entitled “Modulation of Sodium Channels of Dorsal Root Ganglia,” filed Jan. 29, 1999, all of which are herein incorporated by reference in their entirety.

BACKGROUND

[0002] A. Sodium Channels

[0003] Voltage-gated sodium channels are a class of specialized protein molecules that act as molecular batteries permitting excitable cells (neurons and muscle fibers) to produce and propagate electrical impulses. Voltage-gated Na⁺ channels from rat brain are composed of three subunits, the pore-forming α subunit (260 KDa) and two auxiliary subunits, β1 (36 KDa) and β2 (33 KDa) that may modulate the properties of the α-subunit; the α subunit is sufficient to form a functional channel that generates a Na current flow across the membrane [references 1,2 as cited below]. Nine distinct α subunits have been identified in vertebrates and are encoded by members of an expanding gene family [3 and references therein, 4-6] and respective orthologues of a number of them have been cloned from various mammalian species including humans. Specific α subunits are expressed in a tissue- and developmentally-specific manner [7,8]. Aberrant expression patterns or mutations of voltage-gated sodium channel α-subunits underlie a number of human and animal disorders [9-13].

[0004] Voltage-gated sodium channel α-subunits consist of four domains (D1-4) of varying internal homology but of similar predicted structure, connected by three intracellular loops (L1-3). The four domains fold to form a channel that opens to both the cytoplasm and the extracellular space via a pore. The pore opens and closes depending upon the physiological state of the cell membrane.

[0005] Each domain consists of six transmembrane segments (S1-6) that allow the protein to weave through the membrane with intra- and extracellular linkers. The linkers of S5-S6 segments of the four domains contain sequences that line the pore of the channel, and a highly conserved subset of amino acids that acts as a filter to selectively allow sodium ions to traverse the channel pore into the cytoplasm, thus generating an electric current. The amphiphatic S4 segment, in each of the four domains, rich in basic residues repeated every third amino acid, acts as a voltage sensor and undergoes a conformational change as a result of. the change in the voltage difference across the cell membrane. This in turn triggers the conformational change of the protein to open its pore to the extracellular Na⁺ ion gradient.

[0006] In most of the known voltage-gated sodium channel α-subunits the channels close and change into an inoperable state quickly (inactivate) within a few milliseconds after opening of the pore (activation); SNS-type channels, on the other hand, inactivate slowly and require a greater voltage change to activate. L3, the loop that links domains D3 and D4, contains a tripeptide which acts as an intracellular plug that closes the pore after activation, thus inducing the channel to enter the inactive state. After inactivation, these channels further undergo conformational change to restore their resting state and become available for activation. This period is referred to as recovery from inactivation (repriming). Different channels reprime at different rates, and repriming in SNS is relatively rapid.

[0007] Based on amino acid similarities, the voltage-gated sodium channel family has been further subdivided into two subfamilies [14]. Eight of the nine cloned channels belong to subfamily 1. They share many structural features, particularly in their S4 transmembrane segments. However, some of them have been shown to have distinct kinetic properties of inactivation and repriming. Only a single channel of subfamily 2, also referred to as atypical channels, has been identified in human, rat and mouse tissues. This subfamily is primarily characterized by reduced numbers of basic residues in its S4 segments, and thus is predicted to have different voltage-dependence compared to subfamily 1. The physiological function of subfamily 2 channels is currently unknown because its electrophysiological properties have not yet been elucidated.

[0008] The blocking of voltage-gated sodium channels by tetrodotoxin, a neurotoxin, has served to functionally classify these channels into sensitive (TTX-S) and resistant (TTX-R) phenotypes. Two mammalian TTX-R channels have so far been identified, one specific to the cardiac muscle and to very limited areas of the central nervous system (CNS) and the second, SNS, is restricted to peripheral neurons (PNS) of the dorsal root ganglia (DRG) and trigeminal ganglia. Specific amino acid residues that confer resistance or sensitivity to TTX have been localized to the ion selectivity filter of the channel pore. The SNS channel is also described in International Patent Application WO 97/01577

[0009] B. Role of Sodium Channels in Disease States

[0010] Because different Na⁺ channel α-subunit isotypes exhibit different kinetics and voltage-dependence, the firing properties of excitable cells depend on the precise mixture of channel types that they express. Mutants of the cardiac and skeletal muscle α-subunit have been shown to cause a number of muscle disorders. Some examples are as follows: A change of a single basic amino acid residue in the S4 of the skeletal muscle channel is sufficient to change the kinetic properties of this channel and induce a disease state in many patients. A tripeptide deletion in L3 of the cardiac channel, proximal to the inactivation gate, induces a cardiac disorder called Long QT syndrome. A single amino acid change in the S5-S6 linker of domain 1 of Scn8a, the region lining the pore of the channel, causes the mouse mutant “jolting”. The total loss of this channel by a different mutation causes motor end plate “med” disease in mice. This mutation is characterized by loss of motor neuron stimulation of the innervated muscle.

[0011] C. Sodium Channels and Pain

[0012] Axonal injury (injury to nerve fibers, also called axons) can produce chronic pain (termed neuropathic pain). A number of studies have demonstrated altered excitability of the neuronal cell body and dendrites after axonal injury [15-17], and there is evidence for a change in Na⁺ channel density over the neuronal cell body and dendrites following axonal injury [18-20]. The expression of abnormal mixtures of different types of sodium channels in a neuronal cell can also lead to abnormal firing [13], and can contribute to hyperexcitability, paresthesia or pain.

[0013] Recent studies from our group on rat sensory DRG neurons have demonstrated a dramatic change in the expression profile of TTX-R and TTX-S currents and in a number of mRNA transcripts that could encode the channels responsible for these currents in DRG neurons following various insults [21-23]. We have, for example, shown an attenuation of the slowly inactivating, TTX-R current and simultaneous enhancement of the rapidly inactivating, TTX-S Na⁺ currents in identified sensory cutaneous afferent neurons following axotomy [21]. We also have shown a loss of TTX-S, slowly repriming current and TTX-R current and a gain in TTX-S, rapidly repriming current in nociceptive (pain) neurons following axotomy [22], down-regulation of SNS transcripts and a simultaneous up-regulation of α-III Transcripts [23]. Also associated with axotomy is a moderate elevation in the levels of αI and αII mRNAs [24]. These changes in the sodium channel profile appear to contribute to abnormal firing that underlies neuropathic pain that patients suffer following axonal injury.

[0014] Inflammation, which is also associated with pain (termed inflammatory pain), also causes alteration in the sodium current profile in nociceptive DRG neurons. Inflammatory modulators up-regulate TTX-R current in small C-type nociceptive DRG neurons in culture [25,26]. The rapid action of these modulators suggests that their action include posttranslational modification of existing TTX-R channels. We have now determined that inflammation also increases a TTX-R Na⁺ current and up-regulates SNS transcripts in C-type DRG neurons [58]. This data suggests that changes in the sodium current profile contribute to inflammation evoked-pain.

[0015] D. Therapies for Chronic Pain:

[0016] A variety of classes of drugs (anticonvulsants such as phenytoin and carbamazepine; anti-arrhythmics such as mexitine; local anesthetics such as lidocaine) act on Na⁺ channels. Since the various Na⁺ channels produce sodium currents with different properties, selective blockade or activation (or other modulation) of specific channel subtypes is expected to be of significant therapeutic value. Moreover, the selective expression of certain α-subunit isoforms (PN1, SNS, NaN) in specific types of neurons provides a means for selectively altering their behavior.

[0017] Nociceptive neurons of the DRG are the major source of the PNS TTX-R Na⁺ current. Thus, the Na⁺ channels producing TTX-R currents provide a relatively specific target for the manipulation of pain-producing neurons. The molecular structure of one TTX-R channel in these DRG neurons, SNS, has been identified but, prior to our research, it has not been determined whether there are other TTX-R channels in these neurons. If such channels could be identified, they would be ideal candidates as target molecules that are preferentially expressed in nociceptive neurons, and whose modulation would attenuate pain transmission.

SUMMARY OF THE INVENTION

[0018] The present invention includes an isolated nucleic acid which encodes a voltage gated Na⁺ channel that is preferentially expressed in dorsal root ganglia or trigeminal ganglia (the NaN channel). (In our preceding U.S. Provisional Application 60/072,990, this NaN channel was referred to by its previous name “NaX.”) In a preferred embodiment, the isolated nucleic acid comprises the sequence shown in FIG. 1, FIG. 7A, FIG. 8A, FIG. 11A, allelic variants of said sequences or nucleic acids that hybridize to the foregoing sequences under stringent conditions.

[0019] In another embodiment, the invention includes an expression vector comprising an isolated nucleic acid which encodes the voltage gated Na⁺ channel that is preferentially expressed in dorsal root ganglia or trigeminal ganglia either alone or with appropriate regulatory and expression control elements. In a preferred embodiment, the expression vector comprises an isolated nucleic acid having the sequence shown in FIG. 1, FIG. 7A, FIG. 8A, FIG. 11A, allelic variants of said sequences or nucleic acids that hybridize to the foregoing sequences under stringent conditions.

[0020] The present invention further includes a host cell transformed with an expression vector comprising an isolated nucleic acid which encodes a voltage gated Na⁺ channel that is preferentially expressed in dorsal root ganglia or trigeminal ganglia with appropriate regulatory and expression control elements. In a preferred embodiment, the expression vector comprises an isolated nucleic acid having the sequence shown in FIG. 1, FIG. 7A, FIG. 8A, FIG. 11A, allelic variants of said sequences or nucleic acids that hybridize to the foregoing sequences under stringent conditions.

[0021] The present invention also includes an isolated voltage gated Na⁺ channel that is preferentially expressed in dorsal root ganglia or trigeminal ganglia. In a preferred embodiment, the channel has the amino acid sequence of FIGS. 2, 7B, 8B or 11B, or is encoded by a nucleic acid having the sequence shown in FIGS. 1, 7A, 8A or 11A, allelic variants of said sequences or nucleic acids that hybridize to the foregoing sequences under stringent conditions. Peptide fragments of the channel are also included.

[0022] Another aspect of the invention is a method to identify an agent that modulates the activity of the NaN channel, comprising the steps of bringing the agent into contact with a cell that expresses the Na⁺ channel on its surface and measuring depolarization, or any resultant changes in the sodium current. The measuring step may be accomplished with voltage clamp measurements, by measuring depolarization, the level of intracellular sodium or by measuring sodium influx.

[0023] Another aspect of the invention is a method to identify an agent that modulates the transcription or translation of mRNA encoding the NaN channel. The method comprises the steps of bringing the agent into contact with a cell that expresses the Na⁺ channel on its surface and measuring the resultant level of expression of the Na⁺ channel.

[0024] The invention also includes a method to treat pain, paraesthesia and hyperexcitability phenomena in an animal or human subject by administering an effective amount of an agent capable of modulating, such as by inhibiting or enhancing, Na⁺ current flow through NaN channels in DRG or trigeminal neurons. The method may include administering an effective amount of an agent capable of modulating the transcription or translation of mRNA encoding the NaN channel.

[0025] Another aspect of the invention is an isolated nucleic acid that is antisense to the nucleic acids described above. In a preferred embodiment, the antisense nucleic acids are of sufficient length to modulate the expression of NaN channel mRNA in a cell containing the mRNA.

[0026] Another aspect of the invention is a scintigraphic method to image the loci of pain generation or provide a measure the level of pain associated with DRG or trigeminal neuron mediated hyperexcitability in an animal or human subject by administering labeled monoclonal antibodies or other labeled ligands specific for the NaN Na⁺ channel.

[0027] Another aspect of the invention is a method to identify tissues, cells and cell types that express the NaN sodium channel. This method comprises the step of detecting NaN on the cell surface, or en route to the cell surface, or the presence of NaN encoding mRNA.

[0028] The present invention further includes a method of producing a transformed cell that expresses an exogenous NaN encoding nucleic acid, comprising the step of transforming the cell with an expression vector comprising an isolated nucleic acid having the sequence shown in FIGS. 1, 7A, 8A or 11A, allelic variants of said sequences or nucleic acids that hybridize to the foregoing sequences under stringent conditions, together with appropriate regulatory and expression control elements. The invention also includes a method of producing recombinant NaN protein, comprising the step of culturing the transformed host under conditions in which the NaN sodium channel or protein is expressed, and recovering the NaN protein.

[0029] The invention also includes an isolated antibody specific for the NaN channel or polypeptide fragment thereof. The isolated antibody may be labeled.

[0030] Another aspect of the invention includes a therapeutic composition comprising an effective amount of an agent capable of decreasing rapidly repriming sodium current flow in axotomized, inflamed or otherwise injured DRG neurons or in normal DRG neurons that are being driven to fire at high frequency. The invention also includes a method to treat acute pain or acute or chronic neuropathic or inflammatory pain and hyperexcitability phenomena in an animal or a human patient by administering the therapeutic composition.

[0031] The present invention also includes a method to screen candidate compounds for use in treating pain and hyperexcitability phenomena by testing their ability to alter the expression or activity of an NaN channel mRNA or protein in axotomized, inflamed or otherwise injured DRG neurons.

BRIEF DESCRIPTION OF THE DRAWING FIGURES

[0032]FIG. 1 shows the sequence of the rat NaN cDNA.

[0033]FIG. 2 shows the putative amino acid sequence of the rat NaN cDNA. Predicted transmembrance segments of domains I-IV are underlined. The amino acid serine “S” in DI-SS2, implicated in the TTX-R phenotype, is in bold face type.

[0034]FIG. 3 presents a schematic diagram of predicted secondary structure of the NaN α-subunit.

[0035]FIG. 4 shows the results of RT-PCR analysis for α-NaN in extracts of various tissues using NaN-specific primers. NaN is abundantly expressed in dorsal root and trigeminal ganglia. Low levels of NaN are detected in cerebral hemisphere and retina tissues. No detectable NaN signal is seen in cerebellum, optic nerve, spinal cord, sciatic nerve, superior cervical ganglia, skeletal muscle, cardiac muscle, adrenal gland, uterus, liver and kidney.

[0036]FIG. 5 shows the tissue distribution of α-NaN by in situ hybridization. A. Trigeminal ganglion neurons show moderate-to-high hybridization signal. B. Dorsal root ganglion neurons show moderate-to-high hybridization signal in small neurons. Hybridization signal is attenuated in large neurons (arrow). C. Sense probe shows no signal in DRG neurons. D., E., and F. No hybridization signal is seen in spinal cord, cerebellum and liver. All tissues are from adult Sprague-Dawley rat. Scale bars=50 micrometer.

[0037]FIG. 6 shows the predicted lengths of domain I amplification products of rat α-subunits and their subunit-specific restriction enzyme profile.

[0038] FIGS. 7A-7B set forth the nucleotide and amino acid sequences of the murine NaN.

[0039]FIG. 8A-FIG. 8B. FIG. 8A is a partial nucleotide sequence of the human NaN. FIG. 8B is a partial amino acid sequence of the human NaN protein.

[0040]FIG. 9 shows cultures of DRG neurons obtained from L4/5 ganglia of adult rats that were reacted with antibody to NaN and then processed for immunofluorescent localization. a.,b. NaN immunostaining is prominent within the cell bodies of DRG neurons. c. NaN is present in the neuritic outgrowths, as well as the cell bodies, of DRG neurons. d., d′. Nomarski (d.) and fluorescent (d′.) images of a neuron that does not express NaN protein.

[0041]FIG. 10 shows the location of Scn1 1a and related genes on distal mouse chromosome 9. (A) Haplotypes from the Jackson BSS backcross. Black boxes represent C57BL/6J alleles and white boxes represent SPRET/Ei alleles. The number of animals with each haplotype is given below each column. Missing data was inferred from adjacent data when typing was ambiguous. (B) Map of distal chromosome 9 based on data in (A). Positions of Scn5a and Scn10a from the MGD consensus map and the locations of the human orthologs are indicated. Numbers are cM positions on the consensus map (http://www.informatics.jax.org/bin/ccr/index).

[0042]FIG. 11A-FIG. 11B. FIG. 11A shows the cDNA nucleotide sequence of the human NaN gene spanning the complete open reading frame. FIG. 11B sets forth the putative amino acid sequence of the full length human NaN protein.

DETAILED DESCRIPTION

[0043] The present invention relates to a novel gene that we have discovered, called NaN. NaN encodes a previously unidentified protein, referred to herein as NaN, that belongs to the α-subunit voltage-gated sodium channel protein family and that produces a TTX-R sodium current. Such channels underlie the generation and propagation of impulses in excitable cells like neurons and muscle fibers. NaN is a novel sodium channel, with a sequence distinct from other, previously identified, channels. The preferential expression of NaN on sensory, but not other neurons, makes it a very useful target for diagnostic and/or therapeutic uses in relation to acute and/or chronic pain pathologies.

[0044] Definitions:

[0045] This specification uses several technical terms and phrases which are intended to have the following meanings:

[0046] The phrase “modulate” or “alter” refers to up- or down-regulating the level or activity of a particular receptor, ligand or current flow. For example an agent might modulate Na⁺ current flow by inhibiting (decreasing) or enhancing (increasing) Na⁺ current flow. Similarly, an agent might modulate the level of expression of the NaN sodium channel or the activity of the NaN channels that are expressed.

[0047] The phrase “sodium current” or “Na⁺ current” means the flow of sodium ions across a cell membrane, often through channels (specialized protein molecules) that are specifically permeable to certain ions, in this case sodium ions.

[0048] The phrase “voltage gated” means that the ion channel opens when the cell membrane is in a particular voltage range. Voltage-sensitive sodium channels open when the membrane is depolarized. They then permit Na⁺ ions to flow into the cell, producing further depolarization. This permits the cell to generate electrical impulses (also known as “action potentials”).

[0049] The phrase “rapidly repriming” means that the currents recover from inactivation more rapidly than do such currents in most other voltage gated sodium channel family members.

[0050] The terms “TTX-R” and “TTX-S” means that the flow of current through a cell membrane is, respectively, resistant or sensitive to tetrodotoxin (a neurotoxin produced in certain species) at a concentration of about 100 nM.

[0051] The phrase “peripheral nervous system (PNS)” means the part of the nervous system outside of the brain and spinal cord, i.e., the spinal roots and associated ganglia such as dorsal root ganglia (DRG) and trigeminal ganglia, and the peripheral nerves.

[0052] The phrase “inhibits Na⁺ current flow” means that an agent has decreased such current flow relative to a control cell not exposed to that agent. A preferred inhibitor will selectively inhibit such current flow, without affecting the current flow of other sodium channels; or it will inhibit Na⁺ current in the channel of interest to a much larger extent than in other channels.

[0053] The phrase “enhances Na⁺ current flow” means that an agent has increased such current flow relative to a control cell not exposed to that agent. A preferred agent will selectively increase such current flow, without affecting the current flow of other sodium channels; or it will increase Na⁺ current in the channel of interest to a much larger extent than in other channels.

[0054] The phrase “specifically hybridizes” refers to nucleic acids which hybridize under highly stringent or moderately stringent conditions to the nucleic acids encoding the NaN sodium channel, such as the DNA sequence of FIGS. 1, 7A, 8A or 11A.

[0055] The phrase “isolated nucleic acid” refers to nucleic acids that have been separated from or substantially purified relative to contaminant nucleic acids encoding other polypeptides. “Nucleic acids” refers to all forms of DNA and RNA, including cDNA molecules and antisense RNA molecules.

[0056] The phrase “RT-PCR” refers to the process of reverse transcription of RNA (RT) using the enzyme reverse transcriptase, followed by the amplification of certain cDNA templates using the polymerase chain reaction (PCR); PCR requires generic or gene-specific primers and thermostable DNA polymerase, for example, Taq DNA polymerase.

[0057] The phrase “preferentially expressed” means that voltage gated Na⁺ channel is expressed in the defined tissues in detectably greater quantities than in other tissues. For instance, a voltage gated Na⁺ channel that is preferentially expressed in dorsal root ganglia or trigeminal ganglia is found in detectably greater quantities in dorsal root ganglia or trigeminal ganglia when compared to other tissues or cell types. The quantity of the voltage gated Na⁺ channel may be detected by any available means, including the detection of specific RNA levels and detection of the channel protein with specific antibodies.

[0058] Characterization of the NaN Sodium Channel:

[0059] The present invention relates to a previously unidentified, voltage-gated sodium channel α-subunit (NaN), predicted to be TTX-R, voltage-gated, and preferentially expressed in sensory neurons innervating the body (dorsal root ganglia or DRG) and the face (trigeminal ganglia). The predicted open reading frame (ORF), the part of the sequence coding for the NaN protein molecule, has been determined with the putative amino acid sequence from different species (rat, mouse, human) presented in FIGS. 2, 7B, 8B or 11B.

[0060] All of the relevant landmark sequences of voltage-gated sodium channels are present in NaN at the predicted positions, indicating that NaN belongs to the sodium channel family. But NaN is distinct from all other previously identified Na channels, sharing a sequence identity of less than 53% with each one of them. NaN is distinct from SNS, the only other TTX-R Na⁺ channel subunit that has been identified, until our discovery, in PNS. We have identified and cloned NaN without using any primers or probes that are based upon or specific to SNS. Moreover, NaN and SNS share only 47% similarity of their predicted open reading frame (ORF), comparable to the limited similarity of NaN to all subfamily 1 members.

[0061] The low sequence similarity to existing α-subunits clearly identifies NaN as a novel gene, not simply a variant of an existing channel. Sequence variations compared to the other voltage-gated channels indicate that NaN may be the prototype of a novel and previously unidentified, third class of TTX-R channels that may possess distinct properties compared to SNS. NaN and SNS, which are present in nociceptive DRG and trigeminal neurons, may respond to pharmacological interventions in different ways. The preferential expression of NaN in sensory DRG and trigeminal neurons provides a target for selectively modifying the behavior of these nerve cells while not affecting other nerve cells in the brain and spinal cord. A further elucidation of the properties of NaN channels will be important to understand more fully the effects of drugs designed to modulate the function of the “TTX-R” currents which are characteristic of DRG nociceptive neurons and which contribute to the transmission of pain messages, and to abnormal firing patterns after nerve injury and in other painful conditions.

[0062] NaN Nucleic Acids:

[0063] Nucleic acid molecules of the invention include the nucleotide sequences set forth in FIG. 1, FIG. 7A, FIG. 8A, FIG. 11A as well as nucleotide sequences that encode the amino acid sequences of FIG. 2, FIG. 7B, FIG. 8B and 11B. Nucleic acids of the claimed invention also include nucleic acids which specifically hybridize to nucleic acids comprising the nucleotide sequences set forth in FIG. 1, FIG. 7A, 8A or FIG. 11A, or nucleotide sequences which encode the amino acid sequences of FIG. 2, FIG. 7B, FIG. 8B or FIG. 11B. A nucleic acid which specifically hybridizes to a nucleic acid comprising that sequence remains stably bound to said nucleic acid under highly stringent or moderately stringent conditions. Stringent and moderately stringent conditions are those commonly defined and available, such as those defined by Sambrook et al. [59] or Ausubel et al. [60]. The precise level of stringency is not important, rather, conditions should be selected that provide a clear, detectable signal when specific hybridization has occurred.

[0064] Hybridization is a function of sequence identity (homology), G+C content of the sequence, buffer salt content, sequence length and duplex melt temperature (T[m]) among other variables. See, Maniatis et al.[62]. With similar sequence lengths, the buffer salt concentration and temperature provide useful variables for assessing sequence identity (homology) by hybridization techniques. For example, where there is at least 90 percent homology, hybridization is commonly carried out at 68° C. in a buffer salt such as 6×SCC diluted from 20×SSC. See Sambrook et al. [59]. The buffer salt utilized for final Southern blot washes can be used at a low concentration, e.g., 0.1×SSC and at a relatively high temperature, e.g., 68° C., and two sequences will form a hybrid duplex (hybridize). Use of the above hybridization and washing conditions together are defined as conditions of high stringency or highly stringent conditions. Moderately stringent conditions can be utilized for hybridization where two sequences share at least about 80 percent homology. Here, hybridization is carried out using 6×SSC at a temperature of about 50-55° C. A final wash salt concentration of about 1-3×SSC and at a temperature of about 60-68° C. are used. These hybridization and washing conditions define moderately stringent conditions.

[0065] In particular, specific hybridization occurs under conditions in which a high degree of complementarity exists between a nucleic acid comprising the sequence of an isolated sequence and another nucleic acid. With specific hybridization, complementarity will generally be at least about 70%, 75%, 80%, 85%, preferably about 90-100%, or most preferably about 95-100%.

[0066] As used herein, homology or identity is determined by BLAST (Basic Local Alignment Search Tool) analysis using the algorithm employed by the programs blastp, blastn, blastx, tblastn and tblastx (Karlin et al. Proc. Natl. Acad. Sci. USA 87: 2264-2268 (1990) and Altschul, S. F. J. Mol. Evol. 36: 290-300(1993), both of which are herein incorporated by reference) which are tailored for sequence similarity searching. The approach used by the BLAST program is to first consider similar segments between a query sequence and a database sequence, then to evaluate the statistical significance of all matches that are identified and finally to summarize only those matches which satisfy a preselected threshold of significance. For a discussion of basic issues in similarity searching of sequence databases, see Altschul et al. (Nature Genetics 6: 119-129 (1994)) which is herein incorporated by reference. The search parameters for histogram, descriptions, alignments, expect (i.e., the statistical significance threshold for reporting matches against database sequences), cutoff, matrix and filter are at the default settings. The default scoring matrix used by blastp, blastx, tblastn, and tblastx is the BLOSUM62 matrix (Henikoff et al. Proc. Natl. Acad. Sci. USA 89: 10915-10919 (1992), herein incorporated by reference). For blastn, the scoring matrix is set by the ratios of M (i.e., the reward score for a pair of matching residues) to N (i.e., the penalty score for mismatching residues), wherein the default values for M and N are 5 and −4, respectively.

[0067] The nucleic acids of the present invention can be used in a variety of ways in accordance with the present invention. For example, they can be used as nucleic acid probes to screen other cDNA and genomic DNA libraries so as to select by hybridization other DNA sequences that encode homologous NaN sequences. Contemplated nucleic acid probes could be RNA or DNA labeled with radioactive nucleotides or by non-radioactive methods (for example, biotin). Screening may be done at various stringencies (through manipulation of the hybridization Tm, usually using a combination of ionic strength, temperature and/or presence of formamide) to isolate close or distantly related homologs. The nucleic acids may also be used to generate primers to amplify cDNA or genomic DNA using polymerase chain reaction (PCR) techniques. The nucleic acid sequences of the present invention can also be used to identify adjacent sequences in the genome, for example, flanking sequences and regulatory elements of NaN. The nucleic acids may also be used to generate antisense primers or constructs that could be used to modulate the level of gene expression of NaN. The amino acid sequence may be used to design and produce antibodies specific to NaN that could be used to localize NaN to specific cells and to modulate the function of NaN channels expressed on the surface of cells.

[0068] Vectors and Transformed Host Cells:

[0069] The present invention also comprises recombinant vectors containing and capable of replicating and directing the expression of nucleic acids encoding a NaN sodium channel in a compatible host cell. For example, the insertion of a DNA in accordance with the present invention into a vector using enzymes such as T4 DNA ligase, may be performed by any conventional means. Such an insertion is easily accomplished when both the DNA and the desired vector have been cut with the same restriction enzyme or enzymes, since complementary DNA termini are thereby produced. If this cannot be accomplished, it may be necessary to modify the cut ends that are produced by digesting back single-stranded DNA to produce blunt ends, or by achieving the same result by filling in the single-stranded termini with an appropriate DNA polymerase. In this way, blunt-end ligation may be carried out. Alternatively, any site desired may be produced by ligating nucleotide sequences (linkers) onto the DNA termini. Such linkers may comprise specific oligonucleotide sequences that encode restriction site recognition sequences.

[0070] Any available vectors and the appropriate compatible host cells may be used [59, 60]. Commercially available vectors, for instance, those available from New England Biolabs Inc., Promega Corp., Stratagene Inc. or other commercial sources are included.

[0071] The transformation of appropriate cell hosts with an rDNA (recombinant DNA) molecule of the present invention is accomplished by well known methods that typically depend on the type of vector used and host system employed. Frog oocytes can be injected with RNA and will express channels, but in general, expression in a mammalian cell line (such as HEK293 or CHO cells) is preferred. With regard to transformation of prokaryotic host cells, electroporation and salt treatment methods are typically employed, see, for example, Cohen et al. [61]; and [62]. With regard to transformation of vertebrate cells with vectors containing rDNAs, electroporation, cationic lipid or salt treatment methods are typically employed [63, 64].

[0072] Successfully transformed cells, i.e., cells that contain an rDNA molecule of the present invention, can be identified by well known techniques. For example, cells resulting from the introduction of an rDNA of the present invention can be cloned to produce single colonies. Cells from those colonies can be harvested, lysed and their DNA content examined for the presence of the rDNA using conventional methods [65, 66] or the proteins produced from the cell assayed via an immunological method. If tags such as green fluorescent protein are employed in the construction of the recombinant DNA, the transfected cells may also be detected in vivo by the fluorescence of such molecules by cell sorting.

[0073] For transient expression of recombinant channels, transformed host cells for the measurement of Na⁺ current or intracellular Na⁺ levels are typically prepared by co-transfecting constructs into cells such as HEK293 cells with a fluorescent reporter plasmid (such as pGreen Lantern-1, Life Technologies, Inc.) using the calcium-phosphate precipitation technique [27]. HEK293 cells are typically grown in high glucose DMEM (Life Technologies, Inc) supplemented with 10% fetal calf serum (Life Technologies, Inc). After 48 hrs, cells with green fluorescence are selected for recording [28].

[0074] For preparation of cell lines continuously expressing recombinant channels, the NaN construct is cloned into other vectors that carry a selectable marker in mammalian cells. Transfections are carried out using the calcium phosphate precipitation technique [27]. Human embryonic kidney (HEK-293), chinese hamster ovary (CHO) cells, derivatives of either or other suitable cell lines are grown under standard tissue culture conditions in Dulbeccos's modified Eagle's medium supplemented with 10% fetal bovine serum. The calcium phosphate-DNA mixture is added to the cell culture medium and left for 15-20 hr, after which time the cells are washed with fresh medium. After 48 hrs, antibiotic (G418, Geneticin, Life Technologies) is added to select for cells which have acquired neomycin resistance. After 2-3 weeks in G418, 10-20 isolated cell colonies are harvested using sterile 10 ml pipette tips. Colonies are grown for another 4-7 days, split and subsequently tested for channel expression using whole-cell patch-clamp recording techniques and RT-PCR.

[0075] Method of Measuring Na⁺ Current Flow:

[0076] Na⁺ currents are measured using patch clamp methods [29], as described by Rizzo et al. [30] and Dib-Hajj et al. [28]. For these recordings data are acquired on a Macintosh Quadra 950 or similar computer, using a program such as Pulse (v 7.52, HEKA, German). Fire polished electrodes typically (0.8-1.5 MW) are fabricated from capillary glass using a Sutter P-87 puller or a similar instrument. In the most rigorous analyses, cells are usually only considered for analysis if initial seal resistance is <5 Gohm, they have high leakage currents (holding current <0.1 nA at −80 mV), membrane blebs, and an access resistance <5 Mohm. Access resistance is usually monitored throughout the experiment and data are not used if resistance changes occur. Voltage errors are minimized using series resistance compensation and the capacitance artifact is canceled using computer controlled amplifier circuitry or other similar methods. For comparisons of the voltage dependence of activation and inactivation, cells with a maximum voltage error of ±10 mV after compensation are used. Linear leak subtraction is usually used for voltage clamp recordings. Membrane currents are typically filtered at 5 KHz and sampled at 20 KHz. The pipette solution contains a standard solution such as: 140 mM CsF, 2 mM MgCl₂, 1 mM EGTA, and 10 mM Na-HEPES (pH 7.3). The standard bathing solution is usually 140 nM NaCl, 3 mM KCl, 2 mM MgCl₂, 1 mM CaCl₂, 10 mM HEPES, and 10 mM glucose (pH 7.3).

[0077] Voltage clamp studies on transformed cells or DRG neurons, using methods such as intracellular patch-clamp recordings, can provide a quantitative measure of the sodium current density (and thus the number of sodium channels in a cell), and channel physiological properties. These techniques, which measure the currents that flow through ion channels such as sodium channels, are described in Rizzo et al. [21]. Alternatively, the blockage or enhancement of sodium channel function can be measured using optical imaging with sodium-sensitive dyes or with isotopically labeled Na. These methods which are described in Rose, et al., (J. Neurophysiology, 1997 in press) [67] and by Kimelberg and Walz [31], measure the increase in intracellular concentration of sodium ions that occurs when sodium channels are open.

[0078] Measurement of Intracellular Sodium ([Na⁺]_(i))

[0079] The effects of various agents on cells that express Na⁺ can be determined using ratiometric imaging of [Na⁺]_(i) using SBFI or other similar ion-sensitive dyes. In this method, as described by Sontheimer et al. [32], cytosolic-free Na⁺ is measured using an indicator for Na⁺, such as SBFI (sodium-binding benzofuran isophthalate; [33]) or a similar dye. Cells are first loaded with the membrane-permeable acetoxymethyl ester form of the dye (which is dissolved in dimethyl sulfoxide (DMSO) at a stock concentration of 10 mM). Recordings are obtained on the stage of a microscope using a ratiometric imaging setup (e.g., from Georgia Instruments). Excitation light is provided at appropriate wavelengths (e.g., 340:385 nm). Excitation light is passed to the cells through a dichroic reflector (400 nm) and emitted light above 450 nm is collected. Fluorescence signals are amplified, e.g., by an image intensifier (GenIISyS) and collected with a CCD camera, or similar device, interfaced to a frame grabber. To account for fluorescence rundown, the fluorescence ratio 340:385 is used to assay cytosolic-free Na⁺.

[0080] For calibration of SBFI's fluorescence, cells are perfused with calibration solutions containing known Na⁺ concentrations (typically 0 and 30 mM, or 0, 30, and 50 mM [Na⁺]), and with ionophones such as gramicidin and monensin (see above) after each experiment. As reported by Rose and Ransom [34], the 345/390 nm fluorescence ratio of intracellular SBFI changes monotonically with changes in [Na⁺]_(i). Experiments are typically repeated on multiple (typically at least 4) different coverslips, providing statistically significant measurements of intracellular sodium in control cells, and in cells exposed to various concentrations of agents that may block, inhibit or enhance Na⁺.

[0081] Method to Measure Na⁺ Influx Via Measuring ²²Na or ⁸⁶Rb.

[0082]²²Na is a gamma emitter and can be used to measure Na⁺ flux [31], and ⁸⁶Rb⁺ can be used to measure Na⁺/K⁺-ATPase activity [32]. ⁸⁶Rb⁺ ions are taken up by the Na⁺/K⁺-ATPase-like K⁺ ions, but have the advantage of a much longer half-life than ⁴²K⁺[35]. Thus, measurement of the unidirectional ouabain-sensitive ⁸⁶Rb⁺ uptake provides a quantitative method for assaying Na⁺/K⁺-ATPase activity which provides another indicator of the electrical firing of nerve cells. Following incubation of cells expressing NaN with the isotope ²²Na⁺, the cellular content of the isotope is measured by liquid scintillation counting or a similar method, and cell protein is determined using a method such as the bicinchoninic acid protein assay [36] following the modifications described by Goldschmidt and Kimelberg [37] for cultured cells. ²²Na and ⁸⁶Rb⁺ fluxes are determined in the presence and absence of agents that may block, inhibit, or enhance NaN. This permits determination of the actions of these agents on NaN.

[0083] Method to Identify Agents that Modulate NaN-Mediated Current:

[0084] Several approaches can be used to identify agents that are able to modulate (i.e., block or augment) the Na⁺ current through the NaN sodium channel. In general, to identify such agents, a model cultured cell line that expresses the NaN sodium channel is utilized, and one or more conventional assays are used to measure Na⁺ current. Such conventional assays include, for example, patch clamp methods, the ratiometric imaging of [Na⁺]_(i), and the use of ²²Na and ⁸⁶Rb as described above.

[0085] In one embodiment of the present invention, to evaluate the activity of a candidate compound to modulate Na⁺ current, an agent is brought into contact with a suitable transformed host cell that expresses NaN. After mixing or appropriate incubation time, the Na⁺ current is measured to determine if the agent inhibited or enhanced Na⁺ current flow.

[0086] Agents that inhibit or enhance Na⁺ current are thereby identified. A skilled artisan can readily employ a variety of art-recognized techniques for determining whether a particular agent modulates the Na⁺ current flow.

[0087] Because Na⁺ is preferentially expressed in pain-signaling cells, one can also design agents that block, inhibit, or enhance Na⁺ channel function by measuring the response of laboratory animals, treated with these agents, to acute or chronic pain. In one embodiment of this aspect of the invention, laboratory animals such as rats are treated with an agent for instance, an agent that blocks or inhibits (or is thought to block or inhibit) NaN. The response to various painful stimuli are then measured using tests such as the tail-flick test and limb withdrawal reflex, and are compared to untreated controls. These methods are described in Chapter 15 of Reference [38]. In another embodiment of this aspect of the invention, laboratory animals such as rats are subjected to localized injection of pain-producing inflammatory agents such as formalin [39], Freunds adjuvant [40] or carageenan, or are subjected to nerve constriction [41,42] or nerve transection [43] which produce persistent pain. The response to various normal and painful stimuli are then measured, for example, by measuring the latency to withdrawal from a warm or hot stimulus [38] so as to compare control animals and animals treated with agents that are thought to modify NaN.

[0088] The preferred inhibitors and enhancers of NaN preferably will be selective for the NaN Na⁺ channel. They may be totally specific (like tetrodotoxin, TTX, which inhibits sodium channels but does not bind to or directly effect any other channels or receptors), or relatively specific (such as lidocaine which binds to and blocks several types of ion channels, but has a predilection for sodium channels). Total specificity is not required for an inhibitor or enhancer to be efficacious. The ratio of its effect on sodium channels vs. other channels and receptors, may often determine its effect and effects on several channels, in addition to the targeted one, may be efficacious [44].

[0089] It is contemplated that modulating agents of the present invention can be, as examples, peptides, small molecules, naturally occurring and other toxins and vitamin derivatives, as well as carbohydrates. A skilled artisan can readily recognize that there is no limit as to the structural nature of the modulating agents of the present invention. Screening of libraries of molecules may reveal agents that modulate NaN or current flow through it. Similarly, naturally occurring toxins (such as those produced by certain fish, amphibians and invertebrates) can be screened. Such agents can be routinely identified by exposing a transformed host cell or other cell which expresses a sodium channel to these agents and measuring any resultant changes in Na⁺ current

[0090] Recombinant Protein Expression, Synthesis and Purification:

[0091] Recombinant NaN proteins can be expressed, for example, in E. coli strains HB 101, DH5a or the protease deficient strain such as CAG-456 and purified by conventional techniques.

[0092] The peptide agents of the invention can be prepared using standard solid phase (or solution phase) peptide synthesis methods, as is known in the art. In addition, the DNA encoding these peptides may be synthesized using commercially available oligonucleotide synthesis instrumentation and produced recombinantly using standard recombinant production systems. The production using solid phase peptide synthesis is necessitated if non-gene-encoded amino acids are to be included.

[0093] Antibodies and Immunodetection:

[0094] Another class of agents of the present invention are antibodies immunoreactive with the Na⁺ channel. These antibodies may block, inhibit, or enhance the Na⁺ current flow through the channel. Antibodies can be obtained by immunization of suitable mammalian subjects with peptides, containing as antigenic regions, those portions of NaN, particularly (but not necessarily) those that are exposed extracellularly on the cell surface. Such immunological agents also can be used in competitive binding studies to identify second generation inhibitory agents. The antibodies may also be useful in imaging studies, once appropriately labeled by conventional techniques.

[0095] Production of Transgenic Animals:

[0096] Transgenic animals containing and mutant, knock-out or modified NaN genes are also included in the invention. Transgenic animals wherein both NaN and the SNS/PN3 gene are modified, disrupted or in some form modified are also included in the present invention. Transgenic animals are genetically modified animals into which recombinant, exogenous or cloned genetic material has been experimentally transferred. Such genetic material is often referred to as a “transgene”. The nucleic acid sequence of the transgene, in this case a form of NaN, may be integrated either at a locus of a genome where that particular nucleic acid sequence is not otherwise normally found or at the normal locus for the transgene. The transgene may consist of nucleic acid sequences derived from the genome of the same species or of a different species than the species of the target animal.

[0097] The term “germ cell line transgenic animal” refers to a transgenic animal in which the genetic alteration or genetic information was introduced into a germ line cell, thereby conferring the ability of the transgenic animal to transfer the genetic information to offspring. If such offspring in fact possess some or all of that alteration or genetic information, then they too are transgenic animals.

[0098] The alteration or genetic information may be foreign to the species of animal to which the recipient belongs, foreign only to the particular individual recipient, or may be genetic information already possessed by the recipient. In the last case, the altered or introduced gene may be expressed differently than the native gene.

[0099] Transgenic animals can be produced by a variety of different methods including transfection, electroporation, microinjection, gene targeting in embryonic stem cells and recombinant viral and retroviral infection (see, e.g., U.S. Pat. Nos. 4,736,866; 5,602,307; Mullins et al. (1993) Hypertension 22(4):630-633; Brenin et al. (1997) Surg. Oncol. 6(2)99-110; Tuan (ed.), Recombinant Gene Expression Protocols, Methods in Molecular Biology No. 62, Humana Press (1997)).

[0100] A number of recombinant or transgenic mice have been produced, including those which express an activated oncogene sequence (U.S. Pat. No. 4,736,866); express simian SV 40 T-antigen (U.S. Pat. No. 5,728,915); lack the expression of interferon regulatory factor 1 (IRF-1) (U.S. Pat. No. 5,731,490); exhibit dopaminergic dysfunction (U.S. Pat. No. 5,723,719); express at least one human gene which participates in blood pressure control (U.S. Pat. No. 5,731,489); display greater similarity to the conditions existing in naturally occurring Alzheimer's disease (U.S. Pat. No. 5,720,936); have a reduced capacity to mediate cellular adhesion (U.S. Pat. No. 5,602,307); possess a bovine growth hormone gene (Clutter et al. (1996) Genetics 143(4):1753-1760); or, are capable of generating a fully human antibody response (McCarthy (1997) The Lancet 349(9049):405).

[0101] While mice and rats remain the animals of choice for most transgenic experimentation, in some instances it is preferable or even necessary to use alternative animal species. Transgenic procedures have been successfully utilized in a variety of non-murine animals, including sheep, goats, pigs, dogs, cats, monkeys, chimpanzees, hamsters, rabbits, cows and guinea pigs (see, e.g., Kim et al. (1997) Mol. Reprod. Dev. 46(4):515-526; Houdebine (1995) Reprod. Nutr. Dev. 35(6):609-617; Petters (1994) Reprod. Fertil. Dev. 6(5):643-645; Schnieke et al. (1997) Science 278(5346):2130-2133; and Amoah (1997) J. Animal Science 75(2):578-585).

[0102] The method of introduction of nucleic acid fragments into recombination competent mammalian cells can be by any method which favors co-transformation of multiple nucleic acid molecules. Detailed procedures for producing transgenic animals are readily available to one skilled in the art, including the disclosures in U.S. Pat. Nos. 5,489,743 and 5,602,307.

[0103] The specific examples presented below are illustrative only and are not intended to limit the scope of the invention.

EXAMPLES Example 1

[0104] Cloning and Characterization of the Rat NaN Coding Sequence

[0105] a. RNA Preparation

[0106] Dorsal root ganglia (DRG) from the lumber region (L4-L5) were dissected from adult Sprague-Dawley rats and total cellular RNA was isolated by the single step guanidinum isothiocyanate-acid phenol procedure [45]. For analytical applications, DRG tissues were dissected from a few animals at a time. The quality and relative yield of the RNA was assessed by electrophoresis in a 1% agarose gel. Because of the limited starting material (4 DRGs weigh on average 10 mg), quantifying the RNA yield was not attempted. PolyA+ RNA was purified from about 300 μg of total DRG RNA (28 animals) using the PolyATract isolation system according to the manufacturers recommendations (Promega). Half of the purified RNA was used for the preparation of Marathon cDNA (see below) without further quantification.

[0107] b. Reverse Transcription

[0108] For analytical applications, first strand cDNA was synthesized essentially as previously described [46]. Briefly, total RNA was reverse transcribed in a 25 μl final volume using 1 μM random hexamer (Boehringer Mannheim) and 500 units SuperScript II reverse transcriptase (Life Technologies) in the presence of 100 units of RNase Inhibitor (Boehringer Mannheim). The reaction buffer consisted of 50 mM Tris-HCl (pH 8.3), 75 mM KCl, 3 mM MgCl₂, 10 mM DTT and 125 μM dNTP. The reaction was allowed to proceed at 37° C. for 90 min., 42° C. for 30 min, then terminated by heating to 65° C. for 10 min.

[0109] c. First-Strand cDNA Synthesis

[0110] The Marathon cDNA synthesis protocol was followed according to the manufacturer's instruction as summarized below (all buffers and enzymes are purchased from the manufacturer (Clontech):

[0111] Combine the following reagents in a sterile 0.5-ml microcentrifuge tube: 1 μg (1-4 μl) PolyA⁺ RNA sample, 1μl cDNA Synthesis Primer (10 μM) and sterile H₂O to a final volume of 5 μl. Mix contents and spin the tube briefly in a microcentrifuge. Incubate the mixture at 70° C. for 2 min., then immediately quench the tube on ice for 2 min. Touch-spin the tube briefly to collect the condensation. Add the following to each reaction tube: 2 μl 5×First-Strand Buffer, 1 μl dNTP Mix (10 mM), 1 μl [α-³²P]dCTP (1 μCi/μl), 1 μl AMV Reverse Transcriptase (20 units/μl) for a 10 μl volume. The radiolabeled dCTP is optional (used to determine yield of cDNA) and is replaced by sterile H₂O if not used. Mix the contents of the tube by gently pipetting and touch-spin the tube to collect the contents at the bottom. Incubate the mixture at 42° C. for 1 hr in an air incubator to reduce condensation and enhance the yield of the first strand cDNA. Place the tube on ice to terminate first-strand synthesis.

[0112] d. Second-Strand cDNA Synthesis

[0113] Combine the following components in the reaction tube from above: b 48.4 μl Sterile H₂O, 16 μl 5×Second-Strand Buffer, 1.6 μl dNTP Mix (10 mM), 4 μl 20×Second-Strand Enzyme Cocktail for an 80 μl total volume. Mix the contents thoroughly with gentle pipetting and spin the tube briefly in a microcentrifuge. Incubate the mixture at 16° C. for 1.5 hr. then add 2 μl (10 units) of T4 DNA Polymerase, mix thoroughly with gentle pipetting and incubate the mixture at 16° C. for 45 min. Add 4 μl of the EDTA/Glycogen mix to terminate second-strand synthesis. Extract the mixture with an equal volume of buffer-saturated (pH 7.5) phenol:chloroform:isoamyl alcohol (25:24:1). Mix the contents thoroughly by vortexing and spin the tube in a microcentrifuge at maximum speed (up to 14,000 rpm or 13000×g), 4° C. for 10 min. to separate layers. Carefully transfer the top aqueous layer to a clean 0.5-ml tube. Extract the aqueous layer with 100 μl of chloroform:isoamyl alcohol (24:1), vortex, and spin the tube as before to separate the layers. Collect the top layer into a clean 0.5-ml microcentrifuge tube. Ethanol precipitate the double-stranded cDNA by adding one-half volume of 4 M Ammonium Acetate and 2.5 volumes of room-temperature 95% ethanol. Mix thoroughly by vortexing and spin the tube immediately in a microcentrifuge at top speed, room temperature for 20 min. Remove the supernatant carefully and wash the pellet with 300 μl of 80% ethanol. Spin the tube as before for 10 min. and carefully remove the supernatant. Air dry the pellet for up to 10 min. and dissolve the cDNA in 10 μl of sterile H₂O and store at −20° C. Analyze the yield and size of cDNA by running 2 μl of the cDNA solution on a 1.2% agarose/EtBr gel with suitable DNA size markers (for example the 1 Kbp ladder, Gibco/BRL). If EtBr staining does not show a signal and [α-³²P]dCTP was included in the reaction, dry the agarose gel on a vacuum gel drying system and expose an x-ray film to the gel overnight at −70° C.

[0114] e. Adaptor Ligation

[0115] Combine these reagents in a 0.5-ml microcentrifuge test tube, at room temperature, and in the following order: 5 μl ds cDNA, 2 μl Marathon cDNA Adaptor (10 μM), 2 μl 5×DNA Ligation Buffer, 1 μT4 DNA Ligase (1 unit/μl) for a 10 μl final volume. Mix the contents thoroughly with gentle pipetting and spin the tube briefly in a microcentrifuge. Incubate at either: 16° C. overnight; or room temperature (19-23° C.) for 3-4 hr. Inactivate the ligase enzyme by heating the mixture at 70° C. for 5 min. Dilute 1 μl of this reaction mixture with 250 μl of Tricine-EDTA buffer and use for RACE protocols.

[0116] Store the undiluted adaptor-ligated cDNA at −20° C. for future use.

[0117] f. PCR

[0118] For the initial discovery of NaN, we used generic primers designed against highly conserved sequences in domain 1 (D1) of α-subunits I, II and III and later added more primers to accommodate the new α-subunits that were discovered. Thus, we used generic primers that recognize conserved sequences in all known Na⁺ channels. The middle of the amplified region shows significant sequence and length polymorphism (FIG. 6) and [47,48]. Due to codon degeneracy, 4 forward primers (F1-F4) and 3 reverse primers (R1-R3) were designed to ensure efficient priming from all templates that might have been present in the eDNA pool (Table 1); however, any of these primers may bind to multiple templates depending on the stringency of the reaction. Forward primer F1 matches subunits αI, αIII; αNa6; αPN1; αμ1, αrH1 and αSNS/PN3. Sequences of individual subunits show 1 or 2 mismatches to this primer: T to C at position 16 and A to G at position 18 (αNa6); C to R at position 6 (αμ1); A to G at position 18 (αrH1) and T to C at position 3 (αSNS). Forward primer F2 matches subunit αII. Forward primer F3 perfectly matches αNa6 and also matches αrH1 with a single mismatch of C to T at position 16. Reverse primer R1 matches subunits αI, αII, αIII, αNa6, αPN1, αμ1 and αrH . This primer has mismatches compared to 4 subunits: G to A at position 3, A to G at position 4 and T to G at position 7 (αI); T to C at position 1 and A to G at position 19 (αPN1); G to A at position 3 and A to G at position 7 (αμ1); an extra G after position 3, GC to CT at positions 14-15, and A to T at position 21 (αrH1). Reverse primer R2 matches subunit αSNS/PN3. TABLE 1 Generic and NaN-specific primers used for the identification and cloning of NaN. All primers except the marathon primers, were synthesized at the department of Pathology, Program for Critical Technologies in Molecular Medicine, Yale University. Forward Primers Reverse Primers 1. GACCCRTGGAATTGGTTGGA 1. CAAGAAGGCCCAGCTGAAGGTGTC 2. AATCCCTGGAATTGGTTGGA 2. GAGGAATGCCCACGCAAAGGAATC 3. GACCCGTGGAACTGGTTAGA 3. AAGAAGGGACCAGCCAAAGTTGTC 4. GATCTTTGGAACTGGCTTGA 4. ACYTCCATRCANWCCCACAT 5. AACATAGTGCTGGAGTTCAGG 5. AGRAARTCNAGCCARCACCA 6. GTGGCCTTTGGATTCCGGAGG 6. TCTGCTGCCGAGCCAGGTA 7. 7. CTGAGATAACTGAAATCGCC Marathon AP-1 CCATCCTAATACGACTCACTATAGGGC Marathon AP-2 ACTCACTATAGGGCTCGAGCGGC

[0119] We used the respective mouse atypical sodium channel mNa_(v)2.3 sequence to design forward primer F4 and reverse primer R3 to amplify the analogous sequence from αNaG, the presumed rat homolog of mNa_(v)2.3 [14]. The amplified sequence was cloned into the SrfI site of the vector pCR-SCRIPT (Stratagene). The nucleotide sequence of this fragment shows 88% identity to the respective sequence of mNa_(v)2.3 (Dib-Hajj and Waxman, unpublished [68]). The restriction enzyme Xba I was found to be unique to this subunit. Recently, the sequence of a full length cDNA clone of putative sodium channel, NaG-like (SCL-11:Y09164), subunit was published [5]. The published sequence is 99% identical to our sequence and confirms the size and restriction enzyme polymorphism of the NaG PCR product.

[0120] The predicted lengths of amplified products and subunit-specific restriction enzyme recognition sites are shown in FIG. 6. All subunit sequences are based on Genbank database (accession numbers: aI: X03638; αII: X03639; αIII: Y00766; αNa6: L39018; αhNE-Na: X82835; αμl M26643; αrH1 M27902 and αSNS X92184; mNa 2.3 L36719).

[0121] Subsequently, amplification of NaN sequences 3′ terminal to the aforementioned fragment was achieved using NaN-specific primers and two generic reverse primers, R4 and R5. The sequence of the R4 primer was based on the amino acid sequence MWV/DCMEV located just N-terminal to domain II S6 segment (see schematic diagram of FIG. 3 of voltage-gated sodium channel α-subunits for reference). The sequence of the R5 primer is based on the amino acid sequence AWCWLDFL which forms the N-terminal portion of domain III S3 segment.

[0122] Amplification was typically performed in 60 μl volume using 1 μl of the first strand cDNA, 0.8 mM of each primer and 1.75 units of Expand Long Template DNA polymerase enzyme mixture (Boehringer Mannheim). Compared to conventional and thermostable DNA polymerases, Expand Long Template enzyme mixture increases the yield of the PCR products without an increase in non-specific amplification [49,50]. The PCR reaction buffer consisted of 50 mM Tris-HCl (pH 9.2), 16 mM (NH4)₂SO₄, 2.25 mM MgCl₂, 2% (v/v) DMSO and 0.1% Tween 20. As described previously [46], amplification was carried out in two stages using a programmable thermal cycler (PTC-200, MJ Research, Cambridge, Mass.). First, a denaturation step at 94° C. for 4 min, an annealing step at 60° C. for 2 min and an elongation step at 72° C. for 90 sec. Second, a denaturation step at 94° C. for 1 min, an annealing step at 60° C. for 1 min and an elongation step at 72° C. for 90 sec. The second stage was repeated 33 times for a total of 35 cycles, with the elongation step in the last cycle extended to 10 min.

[0123] Primary RACE amplification was performed in 50 μl final volume using 4 μl diluted DRG marathon cDNA template, 0.2 μM marathon AP-1 and NaN-specific primers, 3.5 U Expand Long Template enzyme mixture. Extension period was adjusted at 1 min/800 bp based on the expected product. 5′ and 3′ RACE amplification was performed using primer pairs marathon AP-1/NaN-specific R6 and NaN-specific F5/marathon AP-1, respectively. The PCR reaction buffer consisted of 50 mM Tris-HCl (pH 9.2), 16 mM (NH4)₂SO₄, 3.0 mM MgCl₂, 2% (v/v) DMSO and 0.1% Tween 20. Amplification in three stages was performed in a programmable thermal cycler (PTC-200, MJ Research, Cambridge, Mass.). An initial denaturation step at 92° C. was carried out for 2 min. This was followed by 35 cycles consisting of denaturation at 92° C. for 20 sec, annealing step at 60° C. for 1 min, and an elongation step at 68° C. Finally, an elongation step at 68° C. was carried out for 5 min. Nested amplification was performed using 2 μl of a 1/500 diluted primary RACE product in a final volume of 50 μl under similar conditions to the primary RACE reactions. Primer pairs AP-2/NaN-specific R7 and NaN-specific F6/marathon AP-2 were used for nested 5′ and 3′ RACE, respectively. Secondary RACE products were band isolated from 1% agarose gels and purified using Qiaex gel extraction kit (Qiagen Inc.).

[0124] A schematic diagram of the putative structure of NaN is shown in FIG. 3. The length of the intracellular loops is highly variable both in sequence and length among the various subunits. The exception is the loop between domains III and IV.

Example 2

[0125] Determination of the Putative Rat Amino Acid Sequence for the NaN Channel

[0126] NaN-related clones and secondary RACE fragments were sequenced at the W. M. Keck Foundation Biotechnology Resource Lab, DNA sequencing group at Yale University. Sequence analysis including determination of the predicted amino acid sequence was performed using commercial softwares, Lasergene (DNASTAR) and GCG, Inc. The putative amino acid sequence of NaN is shown in FIG. 2. Predicted transmembrane segments of domains I-IV are underlined.

Example 3

[0127] Determination of the Murine NaN Sequence

[0128] Total RNA extraction from trigeminal ganglia of mice, purification of polyA+ RNA, and Marathon cDNA construction were done as previously described for the rat. The initial amplification was performed using rat NaN primers. The forward primer corresponds to nucleotides 765-787 of the rat sequence (5′ CCCTGCTGCGCTCGGTGAAGAAG 3′), and the reverse primer corresponds to nucleotides 1156-1137 (negative strand) of the rat sequence (5′ GACAAAGTAGATCCCAGAGG 3′) The amplification produced a fragment of the expected size. The sequence of this fragment demonstrated high similarity to rat NaN. Other fragments were amplified using different rat primers and primers designed based on the new mouse NaN sequence that was being produced. Finally, longer fragments were amplified using mouse Marathon cDNA template and mouse NaN-specific primers in combination with adaptor primers that were introduced during the Marathon cDNA synthesis. These fragments were sequenced using primer walking and assembled into FIG. 7A.

[0129] Mouse NaN nucleotide sequence, like rat NaN, lacks the out-of-frame ATG at the -8 position relative to the translation initiation codon ATG at position 41 (FIG. 7A). Translation termination codon TGA is at position 5314. A polyadenylation signal (AATAAA) is present at position 5789 and a putative 23 nucleotide polyA tail is present beginning at position 5800. The sequence encodes an ORF of 1765 a.a. (FIG. 7B), which is 90% similar to rat NaN. The gene encoding NaN has been named Scn11a.

[0130] Chromosomal Localization of Mouse Nan

[0131] A genetic polymorphism between strains C57BL/6J and SPRET/Ei was identified by SSCP analysis of a 274 bp fragment from the 3′UTR of Scn11a . Genotyping of 94 animals from the BSS backcross panel (Rowe et al., 1994) demonstrated linkage of Scn11a with markers on distal chromosome 9 (FIG. 10). No recombinants were observed between Scn11a and the microsatellite marker D9Mit19. Comparison of our data with the MGD consensus map of mouse chromosome 9 revealed close linkage of Scn11a with the two other TTX-R voltage-gated sodium channels, Scn5a (George et al., 1995; Klocke et al., 1992) and Scn10a (Kozak and Sangameswaran, 1996; Souslova et al., 1997).

Example 4

[0132] Determination of a Partial and Complete Human NaN Coding Sequence

[0133] Human DRG tissue was obtained from a transplant donor. Total RNA extraction and cDNA synthesis were performed as described previously.

[0134] Forward primer corresponds to sequence 310-294 (minus strand) of EST AA446878. The sequence of the primer is 5° CTCAGTAGTTGGCATGC 3′. Reverse primer corresponds to sequence 270-247 (minus strand) of EST AA88521 1. The sequence of the primer is 5′ GGAAAGAAGCACGACCACACAGTC 3′. Amplification was performed as previously described. PCR amplification was successful and a 2.1 Kbp fragment was obtained. This fragment was gel purified and sent for sequencing by primer walking, similar to what is done for mouse NaN. The sequence of the ESTs is extended in both directions; the additional sequence shows highest similarity to rat and mouse NaN, compared to the rest of the subunits.

[0135] The sequence of a human 2.1 kbp fragment was obtained using the PCR forward and reverse primers for sequencing from both ends of the fragment. Two additional primers were used to cover the rest of the sequence. The sequence was then extended in the 5′ direction using forward primer 1 (above) and human NaN reverse primer (5′-GTGCCGTAAACATGAGACTGTCG3′) near the 5′ end of the 2.1 kb fragment. The partial amino acid sequence is set forth in FIG. 8B.

[0136] The partial ORF of the human NaN consists 1241 amino acids. The sequence is 64% identical to the corresponding sequence of rat NaN (73% similar, allowing for conservative substitutions) using the advanced BLAST program at NIH. Using the Clustal method of alignment (Lasergene software, DNAStar, Inc.) the human NaN is 68% and 69% similar to mouse and rat NaN, respectively. The respective mouse and rat sequences are 88% similar.

[0137] Further sequencing revealed the cDNA sequence spanning the full length open reading frame for the human NaN gene. This extended wequence is shown in FIG. 11A. In addition to the features noted with regard to the partial cDNA sequence (FIG. 8A), notable features of the extended sequence include a translation start codon (ATG) at position 31 and a translation termination codon at position 5400. A recognizable polyadenylation signal has not been observed and presumably is located 3′ of the disclosed sequence. The putative amino acid sequence of the human Nan protein is set forth in FIG. 11B.

Example 5

[0138] Isolation of an Alternative Splicing Variant of Rat NaN

[0139] A rat NaN cDNA that encodes a C-terminal truncated version of the full-length rat NaN in FIGS. 1 and 2 was isolated by sequencing the insert of a rat cDNA clone. The variant NaN cDNA encodes an NaN protein lacking the 387 C-terminal amino acids of the full length NaN and containing a novel 94 amino acid stretch at the C-terminal end. The new sequence arises from the use of a cryptic donor splice site in exon 23 and a novel exon 23′, which is located in intron 23. Thee novel C terminal amino acids are: AAGQAMRKQG DILGPNIHQF SQSSETPFLG CPQQRTCVSF VRPQRVLRVP WFPAWRTVTF LSRPRSSESS AWLGLVESSG WSGLPGESGP SSLL. The N-terminal amino acids of the truncated variant are identical to amino acids 1-1378 of the full length rat NaN of FIG. 2. The alternative exon and the splicing pattern was confirmed by comparing the cDNA sequence and the genomic sequence in the respective region.

Example 6

[0140] Methods to Isolate other NaN Sequences

[0141] a. Isolation of NaN Sequences from Genomic DNA

[0142] The genomic structure of 3 voltage-gated Na⁺ channel α-subunits have already been determined [51-54]. These genes bear remarkable similarity in their organization and provide a predictable map of most of the exon/intron boundaries. Based on the available rat, mouse and human cDNA sequence of NaN, disclosed herein, PCR primers are designed to amplify NaN homologous sequences from other species using standard PCR protocols.

[0143] Alternatively, commercially available genomic DNA libraries are screened with NaN-specific probes (based on the rat, mouse, or more preferably, the human sequence) using standard library screening procedures [59, 60]. This strategy yields genomic DNA isolates that can then be sequenced and the exon/intron boundaries determined by homology to the rat, mouse or human cDNA sequence.

[0144] b. Isolation of Full Length NaN Sequences Such as Allelic Variants from Human Autopsy or Biopsy/Surgical Tissues

[0145] b.1. Isolation of Human Ganglia Total RNA

[0146] A full length NaN human cDNA homologue is isolated from human dorsal root ganglia or trigeminal ganglia or other cranial ganglia from post-mortem human material, foetuses or biopsy or surgical tissues. Total ribonucleic acid (RNA) is isolated from these tissues by extraction in guanidinium isothiocyanate [69] as described in Example 1.

[0147] b.2 Determination of the Full Length Transcript Size of the Human Homologue of the Rat NaN Sodium Channel cDNA.

[0148] The method of determining transcript size is as described in Example 9.

Example 7

[0149] Production of Human DRG cDNA Library

[0150] A cDNA library from human DRG or trigeminal ganglia polyA+ RNA was prepared in Example 4 using standard molecular biology techniques [59, 60].

[0151] PolyA+ mRNA is hybridized to an oligo(dT) primer and the RNA is copied by reverse transcriptase into single strand cDNA. Then, the RNA in the RNA-DNA hybrid is fragmented by RNase H as E. coli DNA polymerase I synthesizes the second-strand fragment. The ends of the double stranded cDNA are repaired, linkers carrying specific restriction enzyme site (for example, Eco RI) are ligated to the ends using E. coli DNA ligase. The pool of the cDNA insert is then ligated into one of a variety of bacteriophage vectors that are commercially available like Lambda-Zap (Stratagene). The procedures are summarized in more detail as follows:

[0152] a. First Strand cDNA Synthesis

[0153] Dissolve 10 μg poly(A)+RNA at a concentration of 1 μg/μl in sterile water. Heat the RNA for 2-5 min. at 65° C.-70° C., then quench immediately on ice. In a separate tube add in the following order (180 μl total):20 μl 5 mM dNTPs (500 uM final each), 40 μl 5×RT buffer (1×final), 10 μl 200 mM DTT (10 mM final), 20 μl 0.5 mg/ml oligo (dT)12-18 (50 μg/ml final), 60 μl H₂O, 10 μl (10 U) RNasin (50 U/ml final). Mix by vortexing, briefly microcentrifuge, and add the mixture to the tube containing the RNA. Add 20 μl (200 U) AMV or MMLV reverse transcriptase for a final concentration of 1000 U/ml in 200 μl. Mix by pipetting up and down several times and remove 10 μl to a separate tube containing 1 μl of α³²P dCTP. Typically, incubate both tubes at room temperature for 5 min., then place both tubes at 42° C. for 1.5 hr. This radiolabeled aliquot is removed to determine incorporation and permit an estimation of recovery; this reaction is stopped by adding 1 μl of 0.5 M EDTA, pH 8.0, and stored frozen at −20° C. The radiolabeled reaction will be used later to estimate the yield and average size of the cDNA inserts. The main reaction is stopped by adding 4 μl of 0.5 M EDTA, pH 8.0, and 200 μl buffered phenol. The mixture is vortexed well, microcentrifuged at room temperature for 1 min. to separate phases, and the upper aqueous layer is transferred to a fresh tube. Back extract the phenol layer with 1 ×TE buffer (10 mM Tris, 1 mM EDTA, pH 7.5) and pool the aqueous layers from the two extractions. This back extraction of the phenol layer improves the yield. The cDNA is ethanol precipitated using 7.5 M ammonium acetate (final concentration 2.0 to 2.5 M) and 95% ethanol. Place in dry ice/ethanol bath 15 min., warm to 4° C., and microcentrifuge at 10 min. at full speed, 4° C., to pellet nucleic acids. The small, yellow-white pellet is then washed with ice-cold 70% ethanol, and microcentrifuged for 3 min. at full speed, 4° C. Again, remove the supernatant, then briefly dry the pellet.

[0154] b. Second Strand Synthesis

[0155] Typically, the pellet from the first-strand synthesis is resuspended in 284 μl water and these reagents are added in the following order (400 μl total): 4 μl 5 mM dNTPs (50 uM final each), 80 μl 5×second-strand buffer (1×final), 12 μl 5 mM β-NAD (150 uM final), 2 μl 10 uCi/μl α-³²P dCTP (50 uCi/ml final). Mix by vortexing, briefly microcentrifuge, and add: 4 μl (4 U) RNase H (10 U/ml final), 4 μl (20 U) E. coli DNA ligase (50 U/ml final), and 10 μl (100 U) E. coli DNA polymerase I (250 U/ml final). Mix by pipetting up and down, briefly microcentrifuge, and incubate 12 to 16 hr at 14° C. After second-strand synthesis, remove 4 μl of the reaction to determine the yield from the incorporation of the radiolabel into acid-insoluble material. Extract the second-strand synthesis reaction with 400 μl buffered phenol and back extract the phenol phase with 200 μl TE buffer, pH 7.5, as described above. The double stranded cDNA is then ethanol precipitated as described above.

[0156] To complete the second-strand synthesis the double-stranded cDNA ends are rendered blunt using a mixture of enzymes. Resuspend the pellet in 42 μl water then add these reagents in the following order (80 μl total): 5 μl 5 mM dNTPs (310 uM final each), 16 μl 5×TA buffer (1×final), 1μl 5 mM β-NAD (62 uM final). Mix by vortexing, microcentrifuge briefly, and add: 4 μl of 2 μg/ml RNase A (100 ng/ml final), 4 μl (4 U) RNase H (50 U/ml final), 4 μl (20 U) E. coli. DNA ligase (250 U/ml final), and 4 μl (8 U) T4 DNA polymerase (100 U/ml final). Mix as above and incubate 45 min at 37° C. Add 120 μl TE buffer, pH 7.5, and 1 l of 10 mg/ml tRNA. Extract with 200 μl buffered phenol and back extract the phenol layer with 100 μl TE buffer as described above. Pool the two aqueous layers and ethanol precipitate as described above.

[0157] c. Addition of Linkers to Double Stranded cDNA

[0158] Combine these reagents in a 0.5-ml microcentrifuge test tube, at room temperature, and in the following order: 100 ng ds cDNA, 2 μl linkers/adaptors (10 μM), 2 μl 5×DNA Ligation Buffer, 1 μl T4 DNA Ligase ( unit/μl) for a 10 μl final volume. Mix the contents thoroughly with gentle pipetting and spin the tube briefly in a microcentrifuge. Incubate at either: 16° C. overnight; or room temperature (19-23° C.) for 3-4 hr. Inactivate the ligase enzyme by heating the mixture at 70° C. for 5 min. This cDNA is typically digested by Eco RI to prepare the cohesive ends of the cDNA for ligation into the vector and to cleave linker concatemers. Typically this reaction consists of the 10 μl of the cDNA, 2 μl of 10×Eco RI buffer (depending on the company of source), 2 μl of Eco RI (10 units/μl) and sterile H₂O to a final volume of 20 μl. The mixture is incubated at 37° C. for 2-4 hrs.

[0159] d. Size Fractionation of cDNA

[0160] Size exclusion columns are typically used to remove linker molecules and short cDNA fragments (350 bp). For example, a 1-ml Sepharose CL-4B column is prepared in a plastic column plugged with a small piece of sterilized glass wool (a 5 ml plastic pipet will work fine). The column is equilibrated with 0.1 M sodium chloride in 1×TE (10 mM Tris, 1 mM EDTA, pH 7.5). The cDNA is then loaded onto the column and 200 μl fractions are collected. 2 μl aliquots of each fraction are analyzed by gel electrophoresis and autoradiography to determine the peak of cDNA elution. Typically, fractions containing the first half of the peak are pooled and purified by ethanol precipitation and resuspending in 10 μl distilled water.

[0161] e. Cloning of cDNA Into Bacteriophage Vector

[0162] Bacteriophage vectors designed for the cloning and propagation of cDNA are provided ready-digested with Eco RI and with phosphatased ends from commercial sources (e.g., lambda gt10 from Stratagene). The prepared cDNA is ligated into lambda vectors following manufacturer's instructions. Ligated vector/cDNA molecules are packaged into phage particles using packaging extracts available commercially.

Example 8

[0163] Screening of Human cDNA Library

[0164] a. Labeling of cDNA Fragments (Probes) for Library Screening

[0165] An RNA probe is used that recognizes nucleotide sequences that are specific to NaN, such as 1371-1751 of NaN. Other nucleotide sequences can be developed on the basis of the NaN sequence (FIG. 2, 7 and 8) such as nucleotides 765-1160 of the human nucleotide sequence. A Hind III/Bam HI fragment of NaN was inserted in pBluescript (SK+) vector (Stratagene). The sequence of the resulting construct was verified by sequencing. The orientation of the insert is such that the 5′ and 3′ ends of the construct delineated by the Hind III and Bam HI restriction enzyme sites, respectively, are proximal to T7 and T3 RNA polymerase promoters, respectively. Digoxigenin-labeled Sense (linearized at the Hind III site and transcribed by T7 RNA polymerase) and antisense (linearized at the Bam HI site and transcribed by T3 RNA polymerase) transcripts were prepared in vitro using MEGAscript transcription kit (Ambion) according to manufacturer specifications. Briefly, 1 μg linearized template was transcribed with the respective RNA polymerase in a 20 μl final volume containing the following reagents: 1×enzyme mixture containing the respective RNA polymerase and RNase inhibitor and reaction buffer (Ambion), 7.5 mM ATP, GTP and CTP nucleotides, 5.625 mM UTP and 1.725 mM Dig-11UTP (Boehringer Mannheim). In vitro transcription was carried out at 37° C. for 3 hrs in a water bath. DNA template was removed by adding 1 μl of RNase-free DNase I (2U/μl) to each reaction and incubating further at 37° C. for 15 min. The reaction was then stopped by adding 30 μl nuclease-free H₂) and 25 μl of LiC1 precipitation solution (7.5 M Lithium Chloride, 50 mM EDTA).

[0166] The mixture was incubated at −20° C. for 30 min. The RNA transcripts were pelleted in a microfuge at 13000×g, 4° C. for 15 min. The supernatant was removed and the pellet washed once with 100 μl of 75% ethanol. The mixture was re-centrifuged at 13000×g, room temperature for 5 min. The pellet was then air-dried in a closed chamber and subsequently dissolved in 100 ml of RNase-free H₂O. The transcript yield and integrity were determined by comparison to a control DIG-labeled RNA on agarose-formaldehyde gel as described in the DIG/Genius kit according to manufacturer recommendations (Boehringer Mannheim). Alternatively, a skilled artisan can design radioactive probes for autoradiographic analysis.

[0167] Other regions of the rat, mouse or human NaN sodium channel cDNA, like 3′ untranslated sequences, can also be used as probes in a similar fashion for cDNA library screening or Northern blot analysis. Specifically, a probe is made using commercially available kits, such as the Pharmacia oligo labeling kit, or Genius kit (Boehringer Mannheim).

[0168] b. cDNA Library Screening

[0169] Recombinant plaques containing full length human homologues of the NaN sodium channel are detected using moderate stringency hybridization washes (50-60° C., 5×SSC, 30 minutes), using non-radioactive (see above) or radiolabeled DNA or cRNA NaN-specific probes derived from the 3′ untranslated or other regions as described above. Libraries are screened using standard protocols [59, 60] involving the production of nitrocellulose or nylon membrane filters carrying recombinant phages. The recombinant DNA is then hybridized to NaN-specific probes (see above). Moderate stringency washes are carried out.

[0170] Plaques which are positive on duplicate filters (i.e., not artefacts or background) are selected for further purification. One or more rounds of screening after dilution to separate the phage are typically performed. Resulting plaques are then purified, DNA is extracted and the insert sizes of these clones characterized. The clones are cross-hybridized to each other using standard techniques [59] and distinct positive clones identified.

[0171] Typically, overlapping clones that encode the channel are isolated. Standard cloning techniques are then used to produce a full length cDNA construct that contains any 5′ untranslated sequence, the start codon ATG, the coding sequence, a stop codon and any 3′ untranslated sequence, a poly A consensus sequence and possibly a poly A run. If overlapping clones do not produce sufficient fragments to assemble a full length cDNA clone, alternative methods like RACE (PCR-based) could be used to generate the missing pieces or a full length clone.

[0172] C. Characterization of a Human Homologue Full-Length Clone

[0173] A NaN-specific cDNA sequence from a full-length clone is used as a probe in Northern blot analysis to determine the messenger RNA size in human tissue for comparison with the rat and mouse messenger RNA size. Confirmation of biological activity of the cloned cDNA is carried out using methods similar to those described for the rat NaN.

Example 9

[0174] Polymerase Chain Reaction (PCR) Approaches to Clone Other Full Length Human NaN Sodium Channels Using DNA Sequences Derived From Rat, Mouse or Human Amino Acid Sequences

[0175] Total RNA and poly A+RNA is isolated from human dorsal root ganglia or trigerninal ganglia or other cranial ganglia from post-mortem human material or foetuses or biopsy/surgical tissues as described above. Preparation of cDNA and PCR-based methods are then used as described previously in Example 1.

[0176] Using degenerate PCR primers derived from the rat, mouse or human NaN-specific coding sequence (see FIG. 2, FIG. 7B, 8B and FIG. 11 B), the cDNA is amplified using the polymerase chain reaction [69]. A skilled artisan could utilize the many variables which can be manipulated in a PCR reaction to derive the homologous sequences required. These include, but are not limited to, varying cycle and step temperatures, cycle and step times, number of cycles, thermostable polymerase, and Mg²⁺ concentration. A greater specificity can be achieved using nested primers derived from further conserved sequences from the NaN sodium channel.

[0177] Amplification is typically performed in 60 μl volume using 1 μl of the first strand cDNA, 0.8 mM of each primer and 1.75 units of Expand Long Template DNA polymerase enzyme mixture (Boehringer Mannheim). Compared to conventional and thermostable DNA polymerases, Expand Long Template enzyme mixture increases the yield of the PCR products without an increase in non-specific amplification [49,50]. The PCR reaction buffer consists of 50 mM Tris-HCl (pH 9.2), 16 mM (NH14)₂SO₄, 2.25 mM MgCl₂, 2% (v/v) DMSO and 0.1% Tween 20. As described previously [46], amplification is carried out in two stages using a programmable thermal cycler (PTC-200, MJ Research, Cambridge, Mass.). First, a denaturation step at 94° C. for 4 min, an annealing step at 60° C. for 2 min and an elongation step at 72° C. for 90 sec. Second, a denaturation step at 94° C. for 1 min, an annealing step at 60° C. for 1 min and an elongation step at 72° C. for 90 sec. The second stage is repeated 33 times for a total of 35 cycles, with the elongation step in the last cycle extended to 10 min. In addition, control reactions are performed alongside the samples. These should be: 1) all components without cDNA, (negative control) and 2) all reaction components with primers for constitutively expressed product, e.g, GAPDH.

[0178] The products of the PCR reactions are examined on 1-1.6% (w/v) agarose gels. Bands on the gel (visualized by staining with ethidium bromide and viewing under UV light) representing amplification products of the approximate predicted size are then cut from the gel and the DNA purified.

[0179] The resulting DNA may be sequenced directly or is ligated into suitable vectors such as, but not limited to, pCR II (Invitrogen) or pGEMT (Promega). Clones are then sequenced to identify those containing sequence with similarity to the rat, mouse or partial human NaN sodium channel sequence.

Example 10

[0180] Clone Analysis

[0181] Candidate clones from Example 9 are further characterized by conventional techniques. The biological activity of expression products is also confirmed using conventional techniques.

Example 11

[0182] Isolation of Full Length NaN Sequences from Human Fetal Tissues

[0183] Commercially available human fetal cDNA libraries and/or cDNA pools are screened with NaN-specific primers (by PCR) or probes (library screening) using PCR standard PCR protocols- and standard library screening procedures as described above.

Example 12

[0184] Northern Blot of Rat DRG or Trigeminal Neurons with Fragments of Rat NaN

[0185] 10-30 μg total DRG and/or RNA from DRG or trigeminal (for positive tissues) and cerebral hemisphere, cerebellum and liver (for negative tissues) is electrophoresed in denaturing 1% agarose-formaldehyde gel or agarose-glyoxal gel, and then is transferred to a nylon membrane as described in achieved in multiple steps, as detailed in standard molecular biology manuals [59, 60]. Radiolabeled (specific activity of >10⁸ dpm/ug) or Digixoginen-labeled RNA probes are typically used for Northern analysis. An antisense RNA probe (see Example 20, which describes in situ hybridization with a NaN-specific probe) is created by in vitro synthesis from a sense DNA fragment. The membrane carrying the immobilized RNA in wetted with 6×SSC, and the membrane is placed RNA-side-up in a hybridization tube. One ml formamide prehybridization/hybridization solution per 10 cm² of membrane is added. Prehybridization and hybridization are usually carried out in glass tubes in a commercial hybridization oven. The tubes are place in a hybridization oven and incubated, with rotation, at 60° C. for 15 min to 1 hr. The desired volume of probe is pipeted into the hybridization tube, and the incubation is continued with rotation overnight at 60° C. The probe concentration in the hybridization solution should be 10 ng/ml if the specific activity is 10⁸ dpm/ug or 2 ng/ml if the specific activity is 10⁹ dpm/ug (use 2-10 ng/ml of Digixogenin labeled probe).

[0186] The hybridization solution is poured off and an equal volume of 2×SSC/0.1% SDS is added. Incubation with rotation for 5 min at room temperature is carried out. The wash solution is changed, and this step is repeated. To reduce background, it may be beneficial to double the volume of the wash solutions. The wash solution is replaced with an equal volume of 0.2×SSC/0.1% SDS and the tube. is incubated for 5 min with rotation at room temperature. The wash solution is changed and this step is repeated (this is a low-stringency wash). For moderate or high stringency conditions, further washes are done with wash solutions pre-warmed to moderate (42° C.) or high (68° C.) temperatures. The final wash solution is removed and the membrane rinsed in 2×SSC at room temperature. Autoradiography is then performed for up to 1 week. Alternatively, signal is detected using chemiluminescence technology (Amersham) if non-radioactive probes are used. The transcript size is calculated from the signal from the gel in comparison with gel molecular weight standard markers.

Example 13

[0187] Tissue Specific Distribution of NaN by RT-PCR

[0188] NaN-specific forward (5° CCCTGCTGCGCTCGGTGAAGAA 3′) and reverse primer (5′ GACAAAGTAGATCCCAGAGG 3′), were used in RT-PCR assays using cDNA template prepared from multiple rat. These primers amplify NaN sequence between nucleotides 765 and 1156 (392 bp) and are NaN-specific as judged by lack of similarity to sequences in the database (using programs like BLASTN from the National Library of Medicine). Amplification was typically performed in a 60 μl volume using 1 μl of the first strand of cDNA, 0.8 μM of each primer and 1.75 units of Expand Long Template DNA polymerase enzyme mixture (Boehringer Mannheim). Compared to conventional and thermostable DNA polymerases, Expand Long Template enzyme mixture increases the yield of the PCR products without an increase in non-specific amplification [49, 50]. The PCR reaction buffer consisted of 50 mM Tris-HCl (pH 9.2), 16 mM (NH4)₂SO₄, 2.25 MM MgCl₂, 2% (v/v) DMSO and 0.1% Tween 20. As described previously [71], amplification was carried out in two stages using a programmable thermal cycler (PTC-200, MJ Research, Cambridge, Mass.). First, a denaturation step is performed at 94° C. for 4 min., followed by an annealing step at 60° C. for 2 min, and then an elongation step at 72° C. for 90 sec. Second, a denaturation step is performed at 94° C. for 1 min, followed by an annealing step at 60° C. for 1 min, and then an elongation step at 72° C. for 90 sec. The second stage was repeated 33 times for a total of 25-35 cycles, with the elongation step in the last cycle extended to 10 min.

[0189] Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) was used as an internal control to ensure that a lack of NaN signals in different tissues was not due to degraded templates or presence of PCR inhibitors. Rat GAPDH sequences were co-amplified using primers which amplify a 66 bp product that corresponds to nucleotides 328-994 (accession number: M17701). The amplified product spans multiple exon/intron splice sites, based on the structure of the human gene [72]. Dnase I treatment was routinely performed prior to reverse transcription to prevent amplification of GAPDH sequences from genomic processed pseudogenes that may have contaminated the total RNA preparation [73].

[0190] NaN is primarily and preferentially expressed in DRG and trigeminal ganglia neurons. FIG. 4 shows the results of screening by RT-PCR for the expression of NaN in various neuronal and non-neuronal tissues. Lanes 1, 2, 4, 9 and 16 show a single amplification product co-migrating with the 400 bp marker, consistent with NaN-specific product of 392 bp. Lanes 1 and 16, 2, 4 and 9 contain products using DRG, cerebral hemisphere, retina, and trigeminal ganglia, respectively. Using this assay, NaN was not detected in cerebellum, optic nerve, spinal cord, sciatic nerve, superior cervical ganglia, skeletal muscle, cardiac muscle, adrenal gland, uterus, liver or kidney (lanes 3, 5-8, and 10-15, respectively). The attenuated NaN signal in cerebral hemisphere and retina, and the absence of this signal in the remaining tissues is not due to degraded RNA or the presence of PCR inhibitors in the cDNA templates as comparable GAPDH amplification products were obtained in a parallel set of PCR reaction (data not shown).

Example 14

[0191] Transformation of a Host Cell with the NaN Coding Sequence

[0192] Transformed host cells for the measurement of Na⁺ current or intracellular Na⁺ levels are usually prepared by co-transfecting constructs into cells such as HEK293 cells with a fluorescent reporter plasmid (pGreen Lantern-1, Life Technologies, Inc.) using the calcium-phosphate precipitation technique [27]. HEK293 cells are typically grown in high glucose DMEM (Life Technologies, Inc.) supplemented with 10% fetal calf serum (Life Technologies, Inc). After 48 hrs, cells with green fluorescence are selected for recording [28].

[0193] For preparation of cell lines continuously expressing recombinant channels, the NaN construct is cloned into other vectors that carry a selectable marker in mammalian cells. Transfections are carried out using the calcium phosphate precipitation technique [27]. Human embryonic kidney (HEK-293), chinese hamster ovary (CHO) cells, or other suitable cell lines are grown under standard tissue culture conditions in Dulbeccos's modified Eagle's medium supplemented with 10% fetal bovine serum. The calcium phosphate-DNA mixture is added to the cell culture medium and left for 15-20 hr, after which time the cells are washed with fresh medium. After 48 hrs, antibiotic (G418, Geneticin, Life Technologies) is added to select for cells which have acquired neomycin resistance. After 2-3 weeks in G418, 10-20 isolated cell colonies are harvested using sterile 10 ml pipette tips. Colonies are grown for another 4-7 days, split and subsequently tested for channel expression using whole-cell patch-clamp recording techniques and RT-PCR.

Example 15

[0194] Production of NaN Specific Antibodies

[0195] Antibodies specific to the rat, mouse or human NaN are produced with an immunogenic NaN-specific peptide by raising polyclonal antibodies in rabbits. In one example, the peptide CGPNPASNKDCFEKEKDSED (rat amino acids 285-304) was selected because it fits the criteria for immunogenecity and surface accessibility. This peptide sequence does not match any peptide in the public databases. The underlined cysteine (C) residue was changed to Alanine (A) to prevent disulfide bond formation. This amino acid change is not expected to significantly affect the specificity of the antibodies.

[0196] Peptide synthesis, rabbit immunization, and affinity purification of the antipeptide antibodies were performed using standard procedures. Purified antibodies were then tested on DRG neurons in culture. Immunostaining procedures using these antibodies before and after blocking with excess peptide were performed according to standard procedures.

[0197] DRG neurons after 16-24 h in culture were processed for immunocytochemical detection of NaN protein as follows. Coverslips were washed with complete saline solution (137 mM NaCl, 5.3 mM KCl, 1 ITIM M902 25 mM sorbitol, 10 mM HEPES, 3 mM CaC12 pH 7.2), fixed with 4% paraformaldehyde in 0.14 M phosphate buffer for 10 min at 4° C., washed with three 5-min with phosphate-buffered saline (PBS), and blocked with PBS containing 20% normal goat serum, 1% bovine serum albumin and 0.1% Triton X-100 for 15 minutes. The coverslips were incubated in anti-NaN antibody (1:100 dilution) at 4° C. overnight. Following overnight incubation, coverslips were washed extensively in PBS and then incubated with goat anti-rabbit IgG-conjugated to Cy3 (1:3000; Amersham) for 2 h at room temperature. The coverslips were rinsed with PBS and mounted onto glass slides with Aqua-poly-mount. The neurons were examined with a Leitz Aristoplan light microscope equipped with epifluorescence and images were captured with a Dage DC330T color camera and Scion CG-7 color PCI frame grabber (see FIG. 7).

Example 16

[0198] NaN Expression is Altered in a Neuropathic Pain Model

[0199] The CCI model of neuropathic pain (Bennett and Xie) was used to study the plasticity of sodium channel expression in DRG neurons. Twenty two adult, femal Sprague-Dawley rats, weighing 240-260 g, were anesthetized with pentobarbital sodium (50 mg/kg ip) and the right sciatic nerve exposed at the mid-thigh. Four chromic gut (4-0) ligatures were tied loosely around the nerve as described by Bennett and Xie (1988) Pain 33, 87-107. The incision site was closed in layers and a bacteriostatic agent administered intramuscularly.

[0200] Previous studies have shown that transection of the sciatic nerve induces dramatic changes in sodium currents of axotomized DRG neurons, which is paralleled by significant changes to transcripts of various sodium channels expressed in these neurons. Sodium currents that are TTX-R and the transcripts of two TTX-R sodium channels (SNS/PN3 and NaN) are significantly attenuated while a rapidly repriming silent TTX-S current emerges and the transcript of α-III sodium channel, which produces a TTX-S current, is up-regulated. We have discovered that CCI-induced changes in DRG neurons, 14 days post-surgery, mirror those of axotomy. Transcripts of NaN and SNS, the two sensory neuron-specific TTX-R channels, are significantly down-regulated as is the TTX-R sodium current, while transcripts of the TTX-S α-III sodium channel are up-regulated, in small diameter DRG neurons. These changes may be partly responsible for making DRG neurons hyperexcitable, that contributes to the hyperalgesia that results from this injury.

Example 17

[0201] Assays for Agents which Modulate the Activity of the NaN Channel Using Patch Clamp Methods

[0202] Cells lines expressing the cloned Na⁺ channel are used to assay for agents which modulate the activity of the NaN channel, e.g., agents which block or inhibit the channel or enhance channel opening. Since the channel activation is voltage dependent, depolarizing conditions may be used for observation of baseline activity that is modified by the agent to be tested. Depolarization may be achieved by any means available, for example, by raising the extracellular potassium ion concentration to about 20 to 40 nM, or by repeated electrical pulses.

[0203] The agent to be tested is incubated with HEK 293 or other transformed cells that express the Na⁺ channel [28]. After incubation for a sufficient period of time, the agent induced changes in Na⁺ channel activity can be measured by patch-clamp methods [29]. Data for these measurements are acquired on a MacIntosh Quadra 950, or similar computer, using a program such as Pulse (v 7.52, HEKA, German). Fire-polished electrodes (0.8-1.5 MW) are fabricated from capillary glass using a Sutter P-87 puller or a similar instrument. Cells are usually only considered for analysis if initial seal resistance is <5 Gohm, they have high leakage currents (holding current <0.1 nA at −80 mV), membrane blebs, and an access resistance <5 Mohm. Access resistance is monitored and data is not used if resistance changes occur. Voltage errors are minimized using series resistance compensation and the capacitance artifact will be canceled as necessary using computer-controlled amplifier circuitry or other similar methods.

[0204] For comparisons of the voltage dependence of activation and inactivation, cells with a maximum voltage error of 10 mV after compensation are usually used. Linear leak subtraction is used for voltage clamp recordings. Membrane currents are typically filtered at 5 KHz and sampled at 20 KHz. The pipette solution contains a standard solution such as: 140 mM CsF, 2 mM MgCl₂, 1 mM EGTA, and 10 mM Na-HEPES (pH 7.3). The standard bathing solution is a standard solution such as 140 mM NaCl, 3 mM KCl, 2 mM MgCl₂, 1 mM CaCl₂, 10 mM HEPES, and 10 mM glucose (pH 7.3).

[0205] Tetrodotoxin (TTX)-resistant and TTX-sensitive Na⁺ currents are measured by exposure to appropriate concentrations of TTX and/or by pre-pulse protocols which distinguish between TTX-sensitive and TTX-resistant currents on the basis of their distinct steady-state inactivation properties [22,55].

[0206] Data are collected using standard pulse protocols and are analyzed to measure sodium current properties that include voltage-dependence, steady-state characteristics, kinetics, and re-priming. Measurements of current amplitude and cell capacitance provides an estimate of Na⁺ current density, thereby permitting comparisons of channel density under different conditions [22,30]. Cells are studied in the current clamp mode to study patterns of spontaneous and evoked action potential generation, threshold for firing, frequency response characteristics, and response to de- and hyperpolarization, and other aspects of electrogenesis [55]. These measurements are carried out both in control cells expressing NaN and in cells expressing NaN that also have been exposed to the agent to be tested.

Example 18

[0207] Assays for Agents which Modulate the Activity of the NaN Channel by the Measurement of Intracellular Sodium [Na⁺]

[0208] The agent to be tested is incubated with cells exhibiting NaN channel activity. After incubation for a sufficient period of time, the agent induced changes in Na⁺ channel are measured by ratiometric imaging of [Na⁺]_(i) using SBFI. In this method, cytosolic-free Na⁺ is measured using an indicator for Na⁺, such as SBFI (sodium-binding benzofuran isophthalate; [33]) or a similar dye. Cells are first loaded with the membrane-permeable acetoxymethyl ester form of SBFI (SBFI/AM) or a similar dye (usually dissolved in dimethyl sulfoxide (DMSO) at a stock concentration of 10 mM). Recordings are obtained on the stage of a microscope using a commercially available ratiometric imaging setup (e.g., from Georgia Instruments). Excitation light is provided at appropriate wavelengths (e.g., 340:385 nm). Excitation light is passed to the cells through a dichroic reflector (400 nm) and emitted light above 450 nm was collected. Fluorescence signals are amplified, e.g., by an image intensifier (GenIISyS) and collected with a CCD camera, or similar device, interfaced to a frame grabber. To account for fluorescence rundown, the fluorescence ratio 340:385 is used to assay cytosolic-free Na⁺.

[0209] For calibration of SBFI's fluorescence, cells are perfused with calibration solutions containing known Na⁺ concentrations (typically 0 and 30 mM, or 0, 30, and 50 mM [Na⁺], and gramicidin and monensin. As reported by Rose and Ransom [34], the 345/390 nm fluorescence ratio of intracellular SBFI changes monotonically with changes in [Na⁺]_(i). Experiments are repeated on multiple (typically at least 4) different coverslips, providing statistically significant measurements of intracellular sodium in control cells, and in cells exposed to various concentrations of agents that may block, inhibit or enhance the activity of the channel. Use of this method is illustrated in Sontheimer et al. [32].

Example 19

[0210] Assays for Agents which Modulate the Activity of the NaN Channel by Scintigraphic Imaging

[0211] Cells lines expressing the cloned Na⁺ channel are used to assay for agents which modulate the activity of the NaN channel, e.g., agents which block the channel or enhance channel opening. For example, the agent to be tested is incubated with HEK 293 or other transformed cells that express the Na⁺ channel [28]. After incubation for a sufficient period of time, the agent induced changes in Na⁺⁺ channel activity are detected by the measurement of Na⁺ influx by isotopic methods. ²²Na is a gamma emitter and can be used to measure Na⁺ flux [31] and ⁸⁶Rb⁺ can be used to measure Na⁺/K⁺ATPase activity which provides a measure of Na channel activity [32] ⁸⁶Rb⁺ ions are taken up by the Na⁺/K+ATPase like K+ ions, but have the advantage of a much longer half-life than ⁴²K⁺ [35]. Thus, measurement of the unidirectional ouabain-sensitive ⁸⁶Rb⁺ uptake provides a quantitative method for assaying Na⁺/K⁺-ATPase activity which follows action potentials.

[0212] Following incubation of cell expressing NaN to the isotope, the cellular content of the isotope is measured by liquid scintillation counting or a similar method, and cell protein is determined using a method such as the bicinchoninic acid protein assay [36] following the modifications [37] for cultured cells. ²²Na and ⁸⁶ Rb⁺ fluxes are determined in the presence and absence of agents that may block, inhibit, or enhance Na⁺. This permits determination of the actions of these agents on NaN.

Example 20

[0213] In Situ Hybridization

[0214] a. Probes

[0215] Probes are prepared as described above in Example 5.

[0216] b. DRG Neuron Culture

[0217] Cultures of DRG neurons from adult rats were established as described previously [70]. Briefly, lumbar ganglia (L4, L5) from adult Sprague Dawley female rats were freed from their connective sheaths and incubated sequentially in enzyme solutions containing collagenase and then papain. The tissue was triturated in culture medium containing 1:1 Dulbecco's modified Eagle's medium (DMEM) and Hank's F12 medium and 10% fetal calf serum, 1.5 mg/ml trypsin inhibitor, 1.5 mg/ml bovine serum albumin, 100 U/ml penicillin and 0.1 mg/ml streptomycin and plated at a density of 500-1000 cells/mm² on polyornithine/laminin coated coverslips. The cells were maintained at 37° C. in a humidified 95% air/5% CO₂ incubator overnight and then processed for in situ hybridization cytochemistry as described previously [56, 57]. Trigeminal ganglia can be cultured by a skilled artisan using similar methods.

[0218] C. Tissue Preparation

[0219] Adult female Sprague Dawley rats were deeply anesthetized, e.g., with chloral hydrate and perfused through the heart, first with a phosphate-buffered saline (PBS) solution and then with a 4% paraformaldehyde in 0.14 M Sorensen's phosphate buffer, pH 7.4, at 4° C. Following perfusion fixation, dorsal root ganglia at levels L4 and L5 and trigeminal ganglia were collected and placed in fresh fixative at 4° C. After 2-4 hours, the tissue was transferred to a solution containing 4% paraformaldehyde and 30% sucrose in 0.14 M phosphate buffer and stored overnight at 4° C. Fifteen μm sections were cut and placed on poly-L-lysine-coated slides. The slides were processed for in situ hybridization cytochemistry as previously described [24, 56]. Following in situ hybridization cytochemistry, the slides were dehydrated, cleared and mounted with Permount. The results are shown in FIG. 5.

[0220] Sections of DRG hybridized with NaN sense riboprobe showed no specific labeling (panel C, FIG. 5). In DRG (panel A, FIG. 5) and trigeminal (panel B) sections hybridized with a NaN antisense riboprobe, with the NaN signal present in most small (<30 mm diam.) neurons; in contrast, most large (>30 mm diam.) neurons did not exhibit NaN hybridization signal. Sections of spinal cord, cerebellum and liver hybridized with an antisense NaN riboprobe showed no specific signal (panels D, E and F respectively).

Example 21

[0221] Microsatellite Sequences

[0222] The following are the murine intronic microsatellite sequences. These microsatellites may be polymorphic in the human SCN11a gene and could be used as markers to screen for mutant alleles that are associated with a disease. Such screening methods, for instance, hybridization or amplification assays, are readily available. See Sambrook et al. or Ausubel et al.

[0223] Intron 4; microsatellite is dTdg      AGTTTAATGTTGAGTGAATTGTGGTGGTGATTTCCCACTTGAG GCCTTTGTGTTAAAGCCCAATGTGTGTGTGTGTGTGTGTGTGTGTGTG TGTGTGTGTGTGTGTGTGTGTGTGTGGTTGGGGGGTGGTGGCAGAGT CTGGTATTGGTAAGGTGAGAGCAATCCCAGAACGTCCACCTGCTCTT CCATTTTATTAATCAGGCAGGCCTCT

[0224] Intron 5; microsatellite is dCdTdG (dNdG2)₂(X5-30)      GTAAGCCACTGGCTCTTAACTAAAATGCTCGTTGGCATTAGAA CATTTCTGAGCTGGGGTGGTGGTGGTGGTGGTGGTGGTGGTGGTGGT GGTGGTGGTGGTGGTGGTGGTGATGGTGGTGGTGGAGGTGGNGGTG GAGGTGGTGGCTGTGGTGGTGGNGGTGGTGGTGGTGGTGGANGTGG ANGTGGTGGCGTGGTGGTGGNGGTGGTGGTGGAGGTGGTGGCTGTG GTGGTNGTGGTGGC

[0225] Intron 6; microsatellite is dCdA      TGTGCATGCTTGATTCCCAGCTCCTATGGTCTGATTACTCGGT CCTTAGGAGCAAGGCCAGACTGTCCACCCTGACACACACACACACA CACACACACACACACACACACACACACACACACAGTGTAGAGAATT ACCTCATTCTTGGAGTTTCTCTGGAAAAGGAATGTCTCAAAGCCAAGTTC ACAGAGC

[0226] Intron 8; 5′ microsatellite is dTdC followed by a stretch of dT     TGTTAGAAACTCTAAGACAATGAAGCACCATGCTGGAAATAA GAGCACAAACTCTTTCTTCATGCATTACCCACTGCTTGTGCTTTCACC TTAGTGCTCGTGCTCTCTCTTTCTCTCTCTCTCTCTCTCTCTCTCTCTC TCTCTCTCTCTCTCTCTCTCTCTCTCTCTTTTTTTTTTTTTT

[0227] Intron 8; 3′ microsatellite is dCdA     CACACACACACACACACACACACACACACACACACACACAG AGAAACACTGTCGCAGTCATACATATAAAGATAAATACATCTTAAA AAAAGAACCATGTGATTGAGTTATAAAATATTCCAACTTAT

[0228] Intron 10B; microsatellite is dCdA followed, three nucleotides downstream by dCdA₃      AGGTCATTTCCTCTGCAGTGTGCTTGGCAGGAAAAACTTCCTG GCTATTCAAGTCAGTGCCCTGCTTGATCATCCATGTATCACACACAC ACAAAACAAACAAACAAACAAACAAAACCCTGGGGAAGAAGGAAG AGGTTAAGCACATAGGCAGAGAGCAGCCAGGCTGACTCAGAGCAAA CACCTGATCATTCTTCCAT

[0229] Intron 12; microsatellite is dpydG (dt/dCdG)      GTGCTGGGATCAAAGGCGTGCGCCGCCACCACGCCCGGCCCC TTTTTATGTTTCAAATTTACTTTTATCATGTGCACGTGTGTGGGTGCG TGCATGTGTGTGCGTGCGTGTGCGTGTGNGTGTGNGTGTGTGTGTGT GTGTGTGTGTGTGTGTGTGTG

[0230] Intron 14; microsatellite is dCdA     CACACACACACACACACACACACACACACACACACACACACA CACACACACACACACTTGCATCTTTGAGTTAATTGGATAGGCTGAGT CTTACACCGGAATCATACTGTTGC

[0231] Intron 15A; microsatellige is dCdA      CCAATGAGAGACTCTTGTCTCAAAAAAGCCATGGTGTCCAGA TCCTGAGGAATAACACCTAAGAATGTGCTCTGGCCTGAAAACACAC ACACACACACACACACACACACACACACACACAGTTTTATTTATTTA TTTAAAAAAATATGTCTCTAGGCATTGCTGAAATGTCTCCTACAGGA TTAAGTCAACCAGAGCCA

[0232] It should be understood that the foregoing discussion and examples merely present a detailed description of certain preferred embodiments. It will be apparent to those of ordinary skill in the art that various modification and equivalents can be made without departing from the spirit and scope of the invention.

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1 44 1 5875 DNA Rattus norvegicus CDS (41)..(5335) cDNA sequence for rat NaN 1 acggtgccct gatcctctgt accaggaaga cagggtgaag atg gag gag agg tac 55 Met Glu Glu Arg Tyr 1 5 tac ccg gtg atc ttc ccg gac gag cgg aat ttc cgc ccc ttc act tcc 103 Tyr Pro Val Ile Phe Pro Asp Glu Arg Asn Phe Arg Pro Phe Thr Ser 10 15 20 gac tct ctg gct gcc ata gag aag cgg att gct atc caa aag gag agg 151 Asp Ser Leu Ala Ala Ile Glu Lys Arg Ile Ala Ile Gln Lys Glu Arg 25 30 35 aag aag tcc aaa gac aag gcg gca gct gag ccc cag cct cgg cct cag 199 Lys Lys Ser Lys Asp Lys Ala Ala Ala Glu Pro Gln Pro Arg Pro Gln 40 45 50 ctt gac cta aag gcc tcc agg aag tta cct aag ctt tat ggt gac att 247 Leu Asp Leu Lys Ala Ser Arg Lys Leu Pro Lys Leu Tyr Gly Asp Ile 55 60 65 ccc cct gag ctt gta gcg aag cct ctg gaa gac ctg gac cca ttc tac 295 Pro Pro Glu Leu Val Ala Lys Pro Leu Glu Asp Leu Asp Pro Phe Tyr 70 75 80 85 aaa gac cat aag aca ttc atg gtg ttg aac aag aag aga aca att tat 343 Lys Asp His Lys Thr Phe Met Val Leu Asn Lys Lys Arg Thr Ile Tyr 90 95 100 cgc ttc agc gcc aag cgg gcc ttg ttc att ctg ggg cct ttt aat ccc 391 Arg Phe Ser Ala Lys Arg Ala Leu Phe Ile Leu Gly Pro Phe Asn Pro 105 110 115 ctc aga agc tta atg att cgt atc tct gtc cat tca gtc ttt agc atg 439 Leu Arg Ser Leu Met Ile Arg Ile Ser Val His Ser Val Phe Ser Met 120 125 130 ttc atc atc tgc acg gtg atc atc aac tgt atg ttc atg gcg aat tct 487 Phe Ile Ile Cys Thr Val Ile Ile Asn Cys Met Phe Met Ala Asn Ser 135 140 145 atg gag aga agt ttc gac aac gac att ccc gaa tac gtc ttc att ggg 535 Met Glu Arg Ser Phe Asp Asn Asp Ile Pro Glu Tyr Val Phe Ile Gly 150 155 160 165 att tat att tta gaa gct gtg att aaa ata ttg gca aga ggc ttc att 583 Ile Tyr Ile Leu Glu Ala Val Ile Lys Ile Leu Ala Arg Gly Phe Ile 170 175 180 gtg gat gag ttt tcc ttc ctc cga gat ccg tgg aac tgg ctg gac ttc 631 Val Asp Glu Phe Ser Phe Leu Arg Asp Pro Trp Asn Trp Leu Asp Phe 185 190 195 att gtc att gga aca gcg atc gca act tgt ttt ccg ggc agc caa gtc 679 Ile Val Ile Gly Thr Ala Ile Ala Thr Cys Phe Pro Gly Ser Gln Val 200 205 210 aat ctt tca gct ctt cgt acc ttc cga gtg ttc aga gct ctg aag gcg 727 Asn Leu Ser Ala Leu Arg Thr Phe Arg Val Phe Arg Ala Leu Lys Ala 215 220 225 att tca gtt atc tca ggt ctg aag gtc atc gta ggt gcc ctg ctg cgc 775 Ile Ser Val Ile Ser Gly Leu Lys Val Ile Val Gly Ala Leu Leu Arg 230 235 240 245 tcg gtg aag aag ctg gta gac gtg atg gtc ctc act ctc ttc tgc ctc 823 Ser Val Lys Lys Leu Val Asp Val Met Val Leu Thr Leu Phe Cys Leu 250 255 260 agc atc ttt gcc ctg gtc ggt cag cag ctg ttc atg gga att ctg aac 871 Ser Ile Phe Ala Leu Val Gly Gln Gln Leu Phe Met Gly Ile Leu Asn 265 270 275 cag aag tgt att aag cac aac tgt ggc ccc aac cct gca tcc aac aag 919 Gln Lys Cys Ile Lys His Asn Cys Gly Pro Asn Pro Ala Ser Asn Lys 280 285 290 gat tgt ttt gaa aag gaa aaa gat agc gaa gac ttc ata atg tgt ggt 967 Asp Cys Phe Glu Lys Glu Lys Asp Ser Glu Asp Phe Ile Met Cys Gly 295 300 305 acc tgg ctc ggc agc aga ccc tgt ccc aat ggt tct acg tgc gat aaa 1015 Thr Trp Leu Gly Ser Arg Pro Cys Pro Asn Gly Ser Thr Cys Asp Lys 310 315 320 325 acc aca ttg aac cca gac aat aat tat aca aag ttt gac aac ttt ggc 1063 Thr Thr Leu Asn Pro Asp Asn Asn Tyr Thr Lys Phe Asp Asn Phe Gly 330 335 340 tgg tcc ttt ctc gcc atg ttc cgg gtt atg act caa gac tcc tgg gag 1111 Trp Ser Phe Leu Ala Met Phe Arg Val Met Thr Gln Asp Ser Trp Glu 345 350 355 agg ctt tac cga cag atc ctg cgg acc tct ggg atc tac ttt gtc ttc 1159 Arg Leu Tyr Arg Gln Ile Leu Arg Thr Ser Gly Ile Tyr Phe Val Phe 360 365 370 ttc ttc gtg gtg gtc atc ttc ctg ggc tcc ttc tac ctg ctt aac cta 1207 Phe Phe Val Val Val Ile Phe Leu Gly Ser Phe Tyr Leu Leu Asn Leu 375 380 385 acc ctg gct gtt gtc acc atg gct tat gaa gaa cag aac aga aat gta 1255 Thr Leu Ala Val Val Thr Met Ala Tyr Glu Glu Gln Asn Arg Asn Val 390 395 400 405 gct gct gag aca gag gcc aag gag aaa atg ttt cag gaa gcc cag cag 1303 Ala Ala Glu Thr Glu Ala Lys Glu Lys Met Phe Gln Glu Ala Gln Gln 410 415 420 ctg tta agg gag gag aag gag gct ctg gtt gcc atg gga att gac aga 1351 Leu Leu Arg Glu Glu Lys Glu Ala Leu Val Ala Met Gly Ile Asp Arg 425 430 435 agt tcc ctt aat tcc ctt caa gct tca tcc ttt tcc ccg aag aag agg 1399 Ser Ser Leu Asn Ser Leu Gln Ala Ser Ser Phe Ser Pro Lys Lys Arg 440 445 450 aag ttt ttc ggt agt aag aca aga aag tcc ttc ttt atg aga ggg tcc 1447 Lys Phe Phe Gly Ser Lys Thr Arg Lys Ser Phe Phe Met Arg Gly Ser 455 460 465 aag acg gcc caa gcc tca gcg tct gat tca gag gac gat gcc tct aaa 1495 Lys Thr Ala Gln Ala Ser Ala Ser Asp Ser Glu Asp Asp Ala Ser Lys 470 475 480 485 aat cca cag ctc ctt gag cag acc aaa cga ctg tcc cag aac ttg cca 1543 Asn Pro Gln Leu Leu Glu Gln Thr Lys Arg Leu Ser Gln Asn Leu Pro 490 495 500 gtg gat ctc ttt gat gag cac gtg gac ccc ctc cac agg cag aga gcg 1591 Val Asp Leu Phe Asp Glu His Val Asp Pro Leu His Arg Gln Arg Ala 505 510 515 ctg agc gct gtc agt atc tta acc atc acc atg cag gaa caa gaa aaa 1639 Leu Ser Ala Val Ser Ile Leu Thr Ile Thr Met Gln Glu Gln Glu Lys 520 525 530 ttc cag gag cct tgt ttc cca tgt ggg aaa aat ttg gcc tct aag tac 1687 Phe Gln Glu Pro Cys Phe Pro Cys Gly Lys Asn Leu Ala Ser Lys Tyr 535 540 545 ctg gtg tgg gac tgt agc cct caa tgg ctg tgc ata aag aag gtc ctg 1735 Leu Val Trp Asp Cys Ser Pro Gln Trp Leu Cys Ile Lys Lys Val Leu 550 555 560 565 cgg acc atc atg acg gat ccc ttt act gag ctg gcc atc acc atc tgc 1783 Arg Thr Ile Met Thr Asp Pro Phe Thr Glu Leu Ala Ile Thr Ile Cys 570 575 580 atc atc atc aat acc gtt ttc tta gcc gtg gag cac cac aac atg gat 1831 Ile Ile Ile Asn Thr Val Phe Leu Ala Val Glu His His Asn Met Asp 585 590 595 gac aac tta aag acc ata ctg aaa ata gga aac tgg gtt ttc acg gga 1879 Asp Asn Leu Lys Thr Ile Leu Lys Ile Gly Asn Trp Val Phe Thr Gly 600 605 610 att ttc ata gcg gaa atg tgt ctc aag atc atc gcg ctc gac cct tac 1927 Ile Phe Ile Ala Glu Met Cys Leu Lys Ile Ile Ala Leu Asp Pro Tyr 615 620 625 cac tac ttc cgg cac ggc tgg aat gtt ttt gac agc atc gtg gcc ctc 1975 His Tyr Phe Arg His Gly Trp Asn Val Phe Asp Ser Ile Val Ala Leu 630 635 640 645 ctg agt ctc gct gat gtg ctn tac aac aca ctg tct gat aac aat agg 2023 Leu Ser Leu Ala Asp Val Xaa Tyr Asn Thr Leu Ser Asp Asn Asn Arg 650 655 660 tct ttc ttg gct tcc ctc aga gtg ctg agg gtc ttc aag tta gcc aaa 2071 Ser Phe Leu Ala Ser Leu Arg Val Leu Arg Val Phe Lys Leu Ala Lys 665 670 675 tcc tgg ccc acg tta aac act ctc att aag atc atc ggc cac tcc gtg 2119 Ser Trp Pro Thr Leu Asn Thr Leu Ile Lys Ile Ile Gly His Ser Val 680 685 690 ggc gcg ctt gga aac ctg act gtg gtc ctg act atc gtg gtc ttc atc 2167 Gly Ala Leu Gly Asn Leu Thr Val Val Leu Thr Ile Val Val Phe Ile 695 700 705 ttt tct gtg gtg ggc atg cgg ctc ttc ggc acc aag ttt aac aag acc 2215 Phe Ser Val Val Gly Met Arg Leu Phe Gly Thr Lys Phe Asn Lys Thr 710 715 720 725 gcc tac gcc acc cag gag cgg ccc agg cgg cgc tgg cac atg gat aat 2263 Ala Tyr Ala Thr Gln Glu Arg Pro Arg Arg Arg Trp His Met Asp Asn 730 735 740 ttc tac cac tcc ttc ctg gtg gtg ttc cgc atc ctc tgt ggg gaa tgg 2311 Phe Tyr His Ser Phe Leu Val Val Phe Arg Ile Leu Cys Gly Glu Trp 745 750 755 atc gag aac atg tgg ggc tgc atg cag gat atg gac ggc tcc ccg ttg 2359 Ile Glu Asn Met Trp Gly Cys Met Gln Asp Met Asp Gly Ser Pro Leu 760 765 770 tgc atc att gtc ttt gtc ctg ata atg gtg atc ggg aag ctt gtg gtg 2407 Cys Ile Ile Val Phe Val Leu Ile Met Val Ile Gly Lys Leu Val Val 775 780 785 ctt aac ctc ttc att gcc ttg ctg ctc aat tcc ttc agc aat gag gag 2455 Leu Asn Leu Phe Ile Ala Leu Leu Leu Asn Ser Phe Ser Asn Glu Glu 790 795 800 805 aag gat ggg agc ctg gaa gga gag acc agg aaa acc aaa gtg cag cta 2503 Lys Asp Gly Ser Leu Glu Gly Glu Thr Arg Lys Thr Lys Val Gln Leu 810 815 820 gcc ctg gat cgg ttc cgc cgg gcc ttc tcc ttc atg ctg cac gct ctt 2551 Ala Leu Asp Arg Phe Arg Arg Ala Phe Ser Phe Met Leu His Ala Leu 825 830 835 cag agt ttt tgt tgc aag aaa tgc agg agg aaa aac tcg cca aag cca 2599 Gln Ser Phe Cys Cys Lys Lys Cys Arg Arg Lys Asn Ser Pro Lys Pro 840 845 850 aaa gag aca aca gaa agc ttt gct ggt gag aat aaa gac tca atc ctc 2647 Lys Glu Thr Thr Glu Ser Phe Ala Gly Glu Asn Lys Asp Ser Ile Leu 855 860 865 ccg gat gcg agg ccc tgg aag gag tat gat aca gac atg gct ttg tac 2695 Pro Asp Ala Arg Pro Trp Lys Glu Tyr Asp Thr Asp Met Ala Leu Tyr 870 875 880 885 act gga cag gcc ggg gct ccg ctg gcc cca ctc gca gag gta gag gac 2743 Thr Gly Gln Ala Gly Ala Pro Leu Ala Pro Leu Ala Glu Val Glu Asp 890 895 900 gat gtg gaa tat tgt ggt gaa ggc ggt gcc cta ccc acc tca caa cat 2791 Asp Val Glu Tyr Cys Gly Glu Gly Gly Ala Leu Pro Thr Ser Gln His 905 910 915 agt gct gga gtt cag gcc ggt gac ctc cct cca gag acc aag cag ctc 2839 Ser Ala Gly Val Gln Ala Gly Asp Leu Pro Pro Glu Thr Lys Gln Leu 920 925 930 act agc ccg gat gac caa ggg gtt gaa atg gaa gta ttt tct gaa gaa 2887 Thr Ser Pro Asp Asp Gln Gly Val Glu Met Glu Val Phe Ser Glu Glu 935 940 945 gat ctg cat tta agc ata cag agt cct cga aag aag tct gac gca gtg 2935 Asp Leu His Leu Ser Ile Gln Ser Pro Arg Lys Lys Ser Asp Ala Val 950 955 960 965 agc atg ctc tcg gaa tgc agc aca att gac ctg aat gat atc ttt aga 2983 Ser Met Leu Ser Glu Cys Ser Thr Ile Asp Leu Asn Asp Ile Phe Arg 970 975 980 aat tta cag aaa aca gtt tcc ccc aaa aag cag cca gat aga tgc ttt 3031 Asn Leu Gln Lys Thr Val Ser Pro Lys Lys Gln Pro Asp Arg Cys Phe 985 990 995 ccc aag ggc ctt agt tgt cac ttt cta tgc cac aaa aca gac aag aga 3079 Pro Lys Gly Leu Ser Cys His Phe Leu Cys His Lys Thr Asp Lys Arg 1000 1005 1010 aag tcc ccc tgg gtc ctg tgg tgg aac att cgg aaa acc tgc tac caa 3127 Lys Ser Pro Trp Val Leu Trp Trp Asn Ile Arg Lys Thr Cys Tyr Gln 1015 1020 1025 atc gtg aag cac agc tgg ttt gag agt ttc ata atc ttt gtt att ctg 3175 Ile Val Lys His Ser Trp Phe Glu Ser Phe Ile Ile Phe Val Ile Leu 1030 1035 1040 1045 ctg agc agt gga gcg ctg ata ttt gaa gat gtc aat ctc ccc agc cgg 3223 Leu Ser Ser Gly Ala Leu Ile Phe Glu Asp Val Asn Leu Pro Ser Arg 1050 1055 1060 ccc caa gtt gag aaa tta cta agg tgt acc gat aat att ttc aca ttt 3271 Pro Gln Val Glu Lys Leu Leu Arg Cys Thr Asp Asn Ile Phe Thr Phe 1065 1070 1075 att ttc ctc ctg gaa atg atc ctg aag tgg gtg gcc ttt gga ttc cgg 3319 Ile Phe Leu Leu Glu Met Ile Leu Lys Trp Val Ala Phe Gly Phe Arg 1080 1085 1090 agg tat ttc acc agt gcc tgg tgc tgg ctt gat ttc ctc att gtg gtg 3367 Arg Tyr Phe Thr Ser Ala Trp Cys Trp Leu Asp Phe Leu Ile Val Val 1095 1100 1105 gtg tct gtg ctc agt ctc atg aat cta cca agc ttg aag tcc ttc cgg 3415 Val Ser Val Leu Ser Leu Met Asn Leu Pro Ser Leu Lys Ser Phe Arg 1110 1115 1120 1125 act ctg cgg gcc ctg aga cct ctg cgg gcg ctg tcc cag ttt gaa gga 3463 Thr Leu Arg Ala Leu Arg Pro Leu Arg Ala Leu Ser Gln Phe Glu Gly 1130 1135 1140 atg aag gtt gtc gtc tac gcc ctg atc agc gcc ata cct gcc att ctc 3511 Met Lys Val Val Val Tyr Ala Leu Ile Ser Ala Ile Pro Ala Ile Leu 1145 1150 1155 aat gtc ttg ctg gtc tgc ctc att ttc tgg ctc gta ttt tgt atc ttg 3559 Asn Val Leu Leu Val Cys Leu Ile Phe Trp Leu Val Phe Cys Ile Leu 1160 1165 1170 gga gta aat tta ttt tct ggg aag ttt gga agg tgc att aac ggg aca 3607 Gly Val Asn Leu Phe Ser Gly Lys Phe Gly Arg Cys Ile Asn Gly Thr 1175 1180 1185 gac ata aat atg tat ttg gat ttt acc gaa gtt ccg aac cga agc caa 3655 Asp Ile Asn Met Tyr Leu Asp Phe Thr Glu Val Pro Asn Arg Ser Gln 1190 1195 1200 1205 tgt aac att agt aat tac tcg tgg aag gtc ccg cag gtc aac ttt gac 3703 Cys Asn Ile Ser Asn Tyr Ser Trp Lys Val Pro Gln Val Asn Phe Asp 1210 1215 1220 aac gtg ggg aat gcc tat ctc gcc ctg ctg caa gtg gca acc tat aag 3751 Asn Val Gly Asn Ala Tyr Leu Ala Leu Leu Gln Val Ala Thr Tyr Lys 1225 1230 1235 ggc tgg ctg gaa atc atg aat gct gct gtc gat tcc aga gag aaa gac 3799 Gly Trp Leu Glu Ile Met Asn Ala Ala Val Asp Ser Arg Glu Lys Asp 1240 1245 1250 gag cag ccg gac ttt gag gcg aac ctc tac gcg tat ctc tac ttt gtg 3847 Glu Gln Pro Asp Phe Glu Ala Asn Leu Tyr Ala Tyr Leu Tyr Phe Val 1255 1260 1265 gtt ttt atc atc ttc ggc tcc ttc ttt acc ctg aac ctc ttt atc ggt 3895 Val Phe Ile Ile Phe Gly Ser Phe Phe Thr Leu Asn Leu Phe Ile Gly 1270 1275 1280 1285 gtt att att gac aac ttc aat cag cag cag aaa aag tta ggt ggc caa 3943 Val Ile Ile Asp Asn Phe Asn Gln Gln Gln Lys Lys Leu Gly Gly Gln 1290 1295 1300 gac att ttt atg aca gaa gaa cag aag aaa tat tac aat gca atg aaa 3991 Asp Ile Phe Met Thr Glu Glu Gln Lys Lys Tyr Tyr Asn Ala Met Lys 1305 1310 1315 aag tta gga acc aag aaa cct caa aag ccc atc cca agg ccc ctg aac 4039 Lys Leu Gly Thr Lys Lys Pro Gln Lys Pro Ile Pro Arg Pro Leu Asn 1320 1325 1330 aan tgt caa gcc ttt gtg ttc gac ctg gtc aca agc cat gtc ttt gac 4087 Xaa Cys Gln Ala Phe Val Phe Asp Leu Val Thr Ser His Val Phe Asp 1335 1340 1345 gtc atc att ctg ggt ctt att gtc tta aat atg att atc atg atg gct 4135 Val Ile Ile Leu Gly Leu Ile Val Leu Asn Met Ile Ile Met Met Ala 1350 1355 1360 1365 gaa tct gcc gac cag ccc aaa gat gtg aag aaa acc ttt gat atc ctc 4183 Glu Ser Ala Asp Gln Pro Lys Asp Val Lys Lys Thr Phe Asp Ile Leu 1370 1375 1380 aac ata gcc ttc gtg gtc atc ttt acc ata gag tgt ctc atc aaa gtc 4231 Asn Ile Ala Phe Val Val Ile Phe Thr Ile Glu Cys Leu Ile Lys Val 1385 1390 1395 ttt gct ttg agg caa cac tac ttc acc aat ggc tgg aac tta ttt gat 4279 Phe Ala Leu Arg Gln His Tyr Phe Thr Asn Gly Trp Asn Leu Phe Asp 1400 1405 1410 tgt gtg gtc gtg gtt ctt tct atc att agt acc ctg gtt tcc cgc ttg 4327 Cys Val Val Val Val Leu Ser Ile Ile Ser Thr Leu Val Ser Arg Leu 1415 1420 1425 gag gac agt gac att tct ttc ccg ccc acg ctc ttc aga gtc gtc cgc 4375 Glu Asp Ser Asp Ile Ser Phe Pro Pro Thr Leu Phe Arg Val Val Arg 1430 1435 1440 1445 ttg gct cgg att ggt cga atc ctc agg ctg gtc cgg gct gcc cgg gga 4423 Leu Ala Arg Ile Gly Arg Ile Leu Arg Leu Val Arg Ala Ala Arg Gly 1450 1455 1460 atc agg acc ctc ctc ttt gct ttg atg atg tct ctc ccc tct ctc ttc 4471 Ile Arg Thr Leu Leu Phe Ala Leu Met Met Ser Leu Pro Ser Leu Phe 1465 1470 1475 aac atc ggt ctg ctg ctc ttc ctg gtg atg ttc att tac gcc atc ttt 4519 Asn Ile Gly Leu Leu Leu Phe Leu Val Met Phe Ile Tyr Ala Ile Phe 1480 1485 1490 ggg atg agc tgg ttt tcc aaa gtg aag aag ggc tcc ggg atc gac gac 4567 Gly Met Ser Trp Phe Ser Lys Val Lys Lys Gly Ser Gly Ile Asp Asp 1495 1500 1505 atc ttc aac ttc gag acc ttt acg ggc agc atg ctg tgc ctc ttc cag 4615 Ile Phe Asn Phe Glu Thr Phe Thr Gly Ser Met Leu Cys Leu Phe Gln 1510 1515 1520 1525 ata acc act tcg gct ggc tgg gat acc ctc ctc aac ccc atg ctg gag 4663 Ile Thr Thr Ser Ala Gly Trp Asp Thr Leu Leu Asn Pro Met Leu Glu 1530 1535 1540 gca aaa gaa cac tgc aac tcc tcc tcc caa gac agc tgt cag cag ccg 4711 Ala Lys Glu His Cys Asn Ser Ser Ser Gln Asp Ser Cys Gln Gln Pro 1545 1550 1555 cag ata gcc gtc gtc tac ttc gtc agt tac atc atc atc tcc ttc ctc 4759 Gln Ile Ala Val Val Tyr Phe Val Ser Tyr Ile Ile Ile Ser Phe Leu 1560 1565 1570 atc gtg gtc aac atg tac atc gct gtg atc ctc gag aac ttc aac aca 4807 Ile Val Val Asn Met Tyr Ile Ala Val Ile Leu Glu Asn Phe Asn Thr 1575 1580 1585 gcc acg gag gag agc gag gac cct ctg gga gag gac gac ttt gaa atc 4855 Ala Thr Glu Glu Ser Glu Asp Pro Leu Gly Glu Asp Asp Phe Glu Ile 1590 1595 1600 1605 ttc tat gag gtc tgg gag aag ttt gac ccc gag gcg tcg cag ttc atc 4903 Phe Tyr Glu Val Trp Glu Lys Phe Asp Pro Glu Ala Ser Gln Phe Ile 1610 1615 1620 cag tat tcg gcc ctc tct gac ttt gcg gac gcc ctg ccg gag ccg ttg 4951 Gln Tyr Ser Ala Leu Ser Asp Phe Ala Asp Ala Leu Pro Glu Pro Leu 1625 1630 1635 cgt gtg gcc aag ccg aat aag ttt cag ttt cta gtg atg gac ttg ccc 4999 Arg Val Ala Lys Pro Asn Lys Phe Gln Phe Leu Val Met Asp Leu Pro 1640 1645 1650 atg gtg atg ggc gac cgc ctc cat tgc atg gat gtt ctc ttt gct ttc 5047 Met Val Met Gly Asp Arg Leu His Cys Met Asp Val Leu Phe Ala Phe 1655 1660 1665 act acc agg gtc ctc ggg gac tcc agc ggc ttg gat acc atg aaa acc 5095 Thr Thr Arg Val Leu Gly Asp Ser Ser Gly Leu Asp Thr Met Lys Thr 1670 1675 1680 1685 atg atg gag gag aag ttt atg gag gcc aac cct ttt aag aag ctc tac 5143 Met Met Glu Glu Lys Phe Met Glu Ala Asn Pro Phe Lys Lys Leu Tyr 1690 1695 1700 gag ccc ata gtc acc acc acc aag agg aag gag gag gag caa ggc gcc 5191 Glu Pro Ile Val Thr Thr Thr Lys Arg Lys Glu Glu Glu Gln Gly Ala 1705 1710 1715 gcc gtc atc cag agg gcc tac cgg aaa cac atg gag aag atg gtc aaa 5239 Ala Val Ile Gln Arg Ala Tyr Arg Lys His Met Glu Lys Met Val Lys 1720 1725 1730 ctg agg ctg aag gac agg tca agt tca tcg cac cag gtg ttt tgc aat 5287 Leu Arg Leu Lys Asp Arg Ser Ser Ser Ser His Gln Val Phe Cys Asn 1735 1740 1745 gga gac ttg tcc agc ttg gat gtg gcc aag gtc aag gtt cac aat gac 5335 Gly Asp Leu Ser Ser Leu Asp Val Ala Lys Val Lys Val His Asn Asp 1750 1755 1760 1765 tgaaccctca tctccacccc tacctcactg cctcacagct tagcctccag cctctggcga 5395 gcaggcggca gactcactga acacaggccg ttcgatctgt gtttttggct gaacgaggtg 5455 acaggttggc gtccattttt aaatgactct tggaaagatt tcatgtagag agatgttaga 5515 agggactgca aaggacaccg accataacgg aaggcctgga ggacagtcca acttacataa 5575 agatgagaaa caagaaggaa agatcccagg aaaacttcag attgtgttct cagtacattc 5635 cccaatgtgt ctgttcggtg ttttgagtat gtgacctgcc acatgtagct cttttttgca 5695 tgtacgtcaa aaccctgcag taagttaata gcttgctacg ggtgttccta ccagcatcac 5755 agaattgggt gtatgactca aacctaaaag catgactctg acttgtcagt cagcaccccg 5815 actttcagac gctccaatct ctgtcccagg tgtctaacga ataaataggt aaaagaaaaa 5875 2 1765 PRT Rattus norvegicus UNSURE (652)..(1334) Xaa at position 652 is Leu; Xaa at position 1334 is Asn or Lys. Xaa′s result from n′s in SEQ ID NO 1. 2 Met Glu Glu Arg Tyr Tyr Pro Val Ile Phe Pro Asp Glu Arg Asn Phe 1 5 10 15 Arg Pro Phe Thr Ser Asp Ser Leu Ala Ala Ile Glu Lys Arg Ile Ala 20 25 30 Ile Gln Lys Glu Arg Lys Lys Ser Lys Asp Lys Ala Ala Ala Glu Pro 35 40 45 Gln Pro Arg Pro Gln Leu Asp Leu Lys Ala Ser Arg Lys Leu Pro Lys 50 55 60 Leu Tyr Gly Asp Ile Pro Pro Glu Leu Val Ala Lys Pro Leu Glu Asp 65 70 75 80 Leu Asp Pro Phe Tyr Lys Asp His Lys Thr Phe Met Val Leu Asn Lys 85 90 95 Lys Arg Thr Ile Tyr Arg Phe Ser Ala Lys Arg Ala Leu Phe Ile Leu 100 105 110 Gly Pro Phe Asn Pro Leu Arg Ser Leu Met Ile Arg Ile Ser Val His 115 120 125 Ser Val Phe Ser Met Phe Ile Ile Cys Thr Val Ile Ile Asn Cys Met 130 135 140 Phe Met Ala Asn Ser Met Glu Arg Ser Phe Asp Asn Asp Ile Pro Glu 145 150 155 160 Tyr Val Phe Ile Gly Ile Tyr Ile Leu Glu Ala Val Ile Lys Ile Leu 165 170 175 Ala Arg Gly Phe Ile Val Asp Glu Phe Ser Phe Leu Arg Asp Pro Trp 180 185 190 Asn Trp Leu Asp Phe Ile Val Ile Gly Thr Ala Ile Ala Thr Cys Phe 195 200 205 Pro Gly Ser Gln Val Asn Leu Ser Ala Leu Arg Thr Phe Arg Val Phe 210 215 220 Arg Ala Leu Lys Ala Ile Ser Val Ile Ser Gly Leu Lys Val Ile Val 225 230 235 240 Gly Ala Leu Leu Arg Ser Val Lys Lys Leu Val Asp Val Met Val Leu 245 250 255 Thr Leu Phe Cys Leu Ser Ile Phe Ala Leu Val Gly Gln Gln Leu Phe 260 265 270 Met Gly Ile Leu Asn Gln Lys Cys Ile Lys His Asn Cys Gly Pro Asn 275 280 285 Pro Ala Ser Asn Lys Asp Cys Phe Glu Lys Glu Lys Asp Ser Glu Asp 290 295 300 Phe Ile Met Cys Gly Thr Trp Leu Gly Ser Arg Pro Cys Pro Asn Gly 305 310 315 320 Ser Thr Cys Asp Lys Thr Thr Leu Asn Pro Asp Asn Asn Tyr Thr Lys 325 330 335 Phe Asp Asn Phe Gly Trp Ser Phe Leu Ala Met Phe Arg Val Met Thr 340 345 350 Gln Asp Ser Trp Glu Arg Leu Tyr Arg Gln Ile Leu Arg Thr Ser Gly 355 360 365 Ile Tyr Phe Val Phe Phe Phe Val Val Val Ile Phe Leu Gly Ser Phe 370 375 380 Tyr Leu Leu Asn Leu Thr Leu Ala Val Val Thr Met Ala Tyr Glu Glu 385 390 395 400 Gln Asn Arg Asn Val Ala Ala Glu Thr Glu Ala Lys Glu Lys Met Phe 405 410 415 Gln Glu Ala Gln Gln Leu Leu Arg Glu Glu Lys Glu Ala Leu Val Ala 420 425 430 Met Gly Ile Asp Arg Ser Ser Leu Asn Ser Leu Gln Ala Ser Ser Phe 435 440 445 Ser Pro Lys Lys Arg Lys Phe Phe Gly Ser Lys Thr Arg Lys Ser Phe 450 455 460 Phe Met Arg Gly Ser Lys Thr Ala Gln Ala Ser Ala Ser Asp Ser Glu 465 470 475 480 Asp Asp Ala Ser Lys Asn Pro Gln Leu Leu Glu Gln Thr Lys Arg Leu 485 490 495 Ser Gln Asn Leu Pro Val Asp Leu Phe Asp Glu His Val Asp Pro Leu 500 505 510 His Arg Gln Arg Ala Leu Ser Ala Val Ser Ile Leu Thr Ile Thr Met 515 520 525 Gln Glu Gln Glu Lys Phe Gln Glu Pro Cys Phe Pro Cys Gly Lys Asn 530 535 540 Leu Ala Ser Lys Tyr Leu Val Trp Asp Cys Ser Pro Gln Trp Leu Cys 545 550 555 560 Ile Lys Lys Val Leu Arg Thr Ile Met Thr Asp Pro Phe Thr Glu Leu 565 570 575 Ala Ile Thr Ile Cys Ile Ile Ile Asn Thr Val Phe Leu Ala Val Glu 580 585 590 His His Asn Met Asp Asp Asn Leu Lys Thr Ile Leu Lys Ile Gly Asn 595 600 605 Trp Val Phe Thr Gly Ile Phe Ile Ala Glu Met Cys Leu Lys Ile Ile 610 615 620 Ala Leu Asp Pro Tyr His Tyr Phe Arg His Gly Trp Asn Val Phe Asp 625 630 635 640 Ser Ile Val Ala Leu Leu Ser Leu Ala Asp Val Xaa Tyr Asn Thr Leu 645 650 655 Ser Asp Asn Asn Arg Ser Phe Leu Ala Ser Leu Arg Val Leu Arg Val 660 665 670 Phe Lys Leu Ala Lys Ser Trp Pro Thr Leu Asn Thr Leu Ile Lys Ile 675 680 685 Ile Gly His Ser Val Gly Ala Leu Gly Asn Leu Thr Val Val Leu Thr 690 695 700 Ile Val Val Phe Ile Phe Ser Val Val Gly Met Arg Leu Phe Gly Thr 705 710 715 720 Lys Phe Asn Lys Thr Ala Tyr Ala Thr Gln Glu Arg Pro Arg Arg Arg 725 730 735 Trp His Met Asp Asn Phe Tyr His Ser Phe Leu Val Val Phe Arg Ile 740 745 750 Leu Cys Gly Glu Trp Ile Glu Asn Met Trp Gly Cys Met Gln Asp Met 755 760 765 Asp Gly Ser Pro Leu Cys Ile Ile Val Phe Val Leu Ile Met Val Ile 770 775 780 Gly Lys Leu Val Val Leu Asn Leu Phe Ile Ala Leu Leu Leu Asn Ser 785 790 795 800 Phe Ser Asn Glu Glu Lys Asp Gly Ser Leu Glu Gly Glu Thr Arg Lys 805 810 815 Thr Lys Val Gln Leu Ala Leu Asp Arg Phe Arg Arg Ala Phe Ser Phe 820 825 830 Met Leu His Ala Leu Gln Ser Phe Cys Cys Lys Lys Cys Arg Arg Lys 835 840 845 Asn Ser Pro Lys Pro Lys Glu Thr Thr Glu Ser Phe Ala Gly Glu Asn 850 855 860 Lys Asp Ser Ile Leu Pro Asp Ala Arg Pro Trp Lys Glu Tyr Asp Thr 865 870 875 880 Asp Met Ala Leu Tyr Thr Gly Gln Ala Gly Ala Pro Leu Ala Pro Leu 885 890 895 Ala Glu Val Glu Asp Asp Val Glu Tyr Cys Gly Glu Gly Gly Ala Leu 900 905 910 Pro Thr Ser Gln His Ser Ala Gly Val Gln Ala Gly Asp Leu Pro Pro 915 920 925 Glu Thr Lys Gln Leu Thr Ser Pro Asp Asp Gln Gly Val Glu Met Glu 930 935 940 Val Phe Ser Glu Glu Asp Leu His Leu Ser Ile Gln Ser Pro Arg Lys 945 950 955 960 Lys Ser Asp Ala Val Ser Met Leu Ser Glu Cys Ser Thr Ile Asp Leu 965 970 975 Asn Asp Ile Phe Arg Asn Leu Gln Lys Thr Val Ser Pro Lys Lys Gln 980 985 990 Pro Asp Arg Cys Phe Pro Lys Gly Leu Ser Cys His Phe Leu Cys His 995 1000 1005 Lys Thr Asp Lys Arg Lys Ser Pro Trp Val Leu Trp Trp Asn Ile Arg 1010 1015 1020 Lys Thr Cys Tyr Gln Ile Val Lys His Ser Trp Phe Glu Ser Phe Ile 1025 1030 1035 1040 Ile Phe Val Ile Leu Leu Ser Ser Gly Ala Leu Ile Phe Glu Asp Val 1045 1050 1055 Asn Leu Pro Ser Arg Pro Gln Val Glu Lys Leu Leu Arg Cys Thr Asp 1060 1065 1070 Asn Ile Phe Thr Phe Ile Phe Leu Leu Glu Met Ile Leu Lys Trp Val 1075 1080 1085 Ala Phe Gly Phe Arg Arg Tyr Phe Thr Ser Ala Trp Cys Trp Leu Asp 1090 1095 1100 Phe Leu Ile Val Val Val Ser Val Leu Ser Leu Met Asn Leu Pro Ser 1105 1110 1115 1120 Leu Lys Ser Phe Arg Thr Leu Arg Ala Leu Arg Pro Leu Arg Ala Leu 1125 1130 1135 Ser Gln Phe Glu Gly Met Lys Val Val Val Tyr Ala Leu Ile Ser Ala 1140 1145 1150 Ile Pro Ala Ile Leu Asn Val Leu Leu Val Cys Leu Ile Phe Trp Leu 1155 1160 1165 Val Phe Cys Ile Leu Gly Val Asn Leu Phe Ser Gly Lys Phe Gly Arg 1170 1175 1180 Cys Ile Asn Gly Thr Asp Ile Asn Met Tyr Leu Asp Phe Thr Glu Val 1185 1190 1195 1200 Pro Asn Arg Ser Gln Cys Asn Ile Ser Asn Tyr Ser Trp Lys Val Pro 1205 1210 1215 Gln Val Asn Phe Asp Asn Val Gly Asn Ala Tyr Leu Ala Leu Leu Gln 1220 1225 1230 Val Ala Thr Tyr Lys Gly Trp Leu Glu Ile Met Asn Ala Ala Val Asp 1235 1240 1245 Ser Arg Glu Lys Asp Glu Gln Pro Asp Phe Glu Ala Asn Leu Tyr Ala 1250 1255 1260 Tyr Leu Tyr Phe Val Val Phe Ile Ile Phe Gly Ser Phe Phe Thr Leu 1265 1270 1275 1280 Asn Leu Phe Ile Gly Val Ile Ile Asp Asn Phe Asn Gln Gln Gln Lys 1285 1290 1295 Lys Leu Gly Gly Gln Asp Ile Phe Met Thr Glu Glu Gln Lys Lys Tyr 1300 1305 1310 Tyr Asn Ala Met Lys Lys Leu Gly Thr Lys Lys Pro Gln Lys Pro Ile 1315 1320 1325 Pro Arg Pro Leu Asn Xaa Cys Gln Ala Phe Val Phe Asp Leu Val Thr 1330 1335 1340 Ser His Val Phe Asp Val Ile Ile Leu Gly Leu Ile Val Leu Asn Met 1345 1350 1355 1360 Ile Ile Met Met Ala Glu Ser Ala Asp Gln Pro Lys Asp Val Lys Lys 1365 1370 1375 Thr Phe Asp Ile Leu Asn Ile Ala Phe Val Val Ile Phe Thr Ile Glu 1380 1385 1390 Cys Leu Ile Lys Val Phe Ala Leu Arg Gln His Tyr Phe Thr Asn Gly 1395 1400 1405 Trp Asn Leu Phe Asp Cys Val Val Val Val Leu Ser Ile Ile Ser Thr 1410 1415 1420 Leu Val Ser Arg Leu Glu Asp Ser Asp Ile Ser Phe Pro Pro Thr Leu 1425 1430 1435 1440 Phe Arg Val Val Arg Leu Ala Arg Ile Gly Arg Ile Leu Arg Leu Val 1445 1450 1455 Arg Ala Ala Arg Gly Ile Arg Thr Leu Leu Phe Ala Leu Met Met Ser 1460 1465 1470 Leu Pro Ser Leu Phe Asn Ile Gly Leu Leu Leu Phe Leu Val Met Phe 1475 1480 1485 Ile Tyr Ala Ile Phe Gly Met Ser Trp Phe Ser Lys Val Lys Lys Gly 1490 1495 1500 Ser Gly Ile Asp Asp Ile Phe Asn Phe Glu Thr Phe Thr Gly Ser Met 1505 1510 1515 1520 Leu Cys Leu Phe Gln Ile Thr Thr Ser Ala Gly Trp Asp Thr Leu Leu 1525 1530 1535 Asn Pro Met Leu Glu Ala Lys Glu His Cys Asn Ser Ser Ser Gln Asp 1540 1545 1550 Ser Cys Gln Gln Pro Gln Ile Ala Val Val Tyr Phe Val Ser Tyr Ile 1555 1560 1565 Ile Ile Ser Phe Leu Ile Val Val Asn Met Tyr Ile Ala Val Ile Leu 1570 1575 1580 Glu Asn Phe Asn Thr Ala Thr Glu Glu Ser Glu Asp Pro Leu Gly Glu 1585 1590 1595 1600 Asp Asp Phe Glu Ile Phe Tyr Glu Val Trp Glu Lys Phe Asp Pro Glu 1605 1610 1615 Ala Ser Gln Phe Ile Gln Tyr Ser Ala Leu Ser Asp Phe Ala Asp Ala 1620 1625 1630 Leu Pro Glu Pro Leu Arg Val Ala Lys Pro Asn Lys Phe Gln Phe Leu 1635 1640 1645 Val Met Asp Leu Pro Met Val Met Gly Asp Arg Leu His Cys Met Asp 1650 1655 1660 Val Leu Phe Ala Phe Thr Thr Arg Val Leu Gly Asp Ser Ser Gly Leu 1665 1670 1675 1680 Asp Thr Met Lys Thr Met Met Glu Glu Lys Phe Met Glu Ala Asn Pro 1685 1690 1695 Phe Lys Lys Leu Tyr Glu Pro Ile Val Thr Thr Thr Lys Arg Lys Glu 1700 1705 1710 Glu Glu Gln Gly Ala Ala Val Ile Gln Arg Ala Tyr Arg Lys His Met 1715 1720 1725 Glu Lys Met Val Lys Leu Arg Leu Lys Asp Arg Ser Ser Ser Ser His 1730 1735 1740 Gln Val Phe Cys Asn Gly Asp Leu Ser Ser Leu Asp Val Ala Lys Val 1745 1750 1755 1760 Lys Val His Asn Asp 1765 3 1765 PRT Rattus norvegicus putative amino acid seq. of rat NaN 3 Met Glu Glu Arg Tyr Tyr Pro Val Ile Phe Pro Asp Glu Arg Asn Phe 1 5 10 15 Arg Pro Phe Thr Ser Asp Ser Leu Ala Ala Ile Glu Lys Arg Ile Ala 20 25 30 Ile Gln Lys Glu Arg Lys Lys Ser Lys Asp Lys Ala Ala Ala Glu Pro 35 40 45 Gln Pro Arg Pro Gln Leu Asp Leu Lys Ala Ser Arg Lys Leu Pro Lys 50 55 60 Leu Tyr Gly Asp Ile Pro Pro Glu Leu Val Ala Lys Pro Leu Glu Asp 65 70 75 80 Leu Asp Pro Phe Tyr Lys Asp His Lys Thr Phe Met Val Leu Asn Lys 85 90 95 Lys Arg Thr Ile Tyr Arg Phe Ser Ala Lys Arg Ala Leu Phe Ile Leu 100 105 110 Gly Pro Phe Asn Pro Leu Arg Ser Leu Met Ile Arg Ile Ser Val His 115 120 125 Ser Val Phe Ser Met Phe Ile Ile Cys Thr Val Ile Ile Asn Cys Met 130 135 140 Phe Met Ala Asn Ser Met Glu Arg Ser Phe Asp Asn Asp Ile Pro Glu 145 150 155 160 Tyr Val Phe Ile Gly Ile Tyr Ile Leu Glu Ala Val Ile Lys Ile Leu 165 170 175 Ala Arg Gly Phe Ile Val Asp Glu Phe Ser Phe Leu Arg Asp Pro Trp 180 185 190 Asn Trp Leu Asp Phe Ile Val Ile Gly Thr Ala Ile Ala Thr Cys Phe 195 200 205 Pro Gly Ser Gln Val Asn Leu Ser Ala Leu Arg Thr Phe Arg Val Phe 210 215 220 Arg Ala Leu Lys Ala Ile Ser Val Ile Ser Gly Leu Lys Val Ile Val 225 230 235 240 Gly Ala Leu Leu Arg Ser Val Lys Lys Leu Val Asp Val Met Val Leu 245 250 255 Thr Leu Phe Cys Leu Ser Ile Phe Ala Leu Val Gly Gln Gln Leu Phe 260 265 270 Met Gly Ile Leu Asn Gln Lys Cys Ile Lys His Asn Cys Gly Pro Asn 275 280 285 Pro Ala Ser Asn Lys Asp Cys Phe Glu Lys Glu Lys Asp Ser Glu Asp 290 295 300 Phe Ile Met Cys Gly Thr Trp Leu Gly Ser Arg Pro Cys Pro Asn Gly 305 310 315 320 Ser Thr Cys Asp Lys Thr Thr Leu Asn Pro Asp Asn Asn Tyr Thr Lys 325 330 335 Phe Asp Asn Phe Gly Trp Ser Phe Leu Ala Met Phe Arg Val Met Thr 340 345 350 Gln Asp Ser Trp Glu Arg Leu Tyr Arg Gln Ile Leu Arg Thr Ser Gly 355 360 365 Ile Tyr Phe Val Phe Phe Phe Val Val Val Ile Phe Leu Gly Ser Phe 370 375 380 Tyr Leu Leu Asn Leu Thr Leu Ala Val Val Thr Met Ala Tyr Glu Glu 385 390 395 400 Gln Asn Arg Asn Val Ala Ala Glu Thr Glu Ala Lys Glu Lys Met Phe 405 410 415 Gln Glu Ala Gln Gln Leu Leu Arg Glu Glu Lys Glu Ala Leu Val Ala 420 425 430 Met Gly Ile Asp Arg Ser Ser Leu Asn Ser Leu Gln Ala Ser Ser Phe 435 440 445 Ser Pro Lys Lys Arg Lys Phe Phe Gly Ser Lys Thr Arg Lys Ser Phe 450 455 460 Phe Met Arg Gly Ser Lys Thr Ala Gln Ala Ser Ala Ser Asp Ser Glu 465 470 475 480 Asp Asp Ala Ser Lys Asn Pro Gln Leu Leu Glu Gln Thr Lys Arg Leu 485 490 495 Ser Gln Asn Leu Pro Val Asp Leu Phe Asp Glu His Val Asp Pro Leu 500 505 510 His Arg Gln Arg Ala Leu Ser Ala Val Ser Ile Leu Thr Ile Thr Met 515 520 525 Gln Glu Gln Glu Lys Phe Gln Glu Pro Cys Phe Pro Cys Gly Lys Asn 530 535 540 Leu Ala Ser Lys Tyr Leu Val Trp Asp Cys Ser Pro Gln Trp Leu Cys 545 550 555 560 Ile Lys Lys Val Leu Arg Thr Ile Met Thr Asp Pro Phe Thr Glu Leu 565 570 575 Ala Ile Thr Ile Cys Ile Ile Ile Asn Thr Val Phe Leu Ala Val Glu 580 585 590 His His Asn Met Asp Asp Asn Leu Lys Thr Ile Leu Lys Ile Gly Asn 595 600 605 Trp Val Phe Thr Gly Ile Phe Ile Ala Glu Met Cys Leu Lys Ile Ile 610 615 620 Ala Leu Asp Pro Tyr His Tyr Phe Arg His Gly Trp Asn Val Phe Asp 625 630 635 640 Ser Ile Val Ala Leu Leu Ser Leu Ala Asp Val Leu Tyr Asn Thr Leu 645 650 655 Ser Asp Asn Asn Arg Ser Phe Leu Ala Ser Leu Arg Val Leu Arg Val 660 665 670 Phe Lys Leu Ala Lys Ser Trp Pro Thr Leu Asn Thr Leu Ile Lys Ile 675 680 685 Ile Gly His Ser Val Gly Ala Leu Gly Asn Leu Thr Val Val Leu Thr 690 695 700 Ile Val Val Phe Ile Phe Ser Val Val Gly Met Arg Leu Phe Gly Thr 705 710 715 720 Lys Phe Asn Lys Thr Ala Tyr Ala Thr Gln Glu Arg Pro Arg Arg Arg 725 730 735 Trp His Met Asp Asn Phe Tyr His Ser Phe Leu Val Val Phe Arg Ile 740 745 750 Leu Cys Gly Glu Trp Ile Glu Asn Met Trp Gly Cys Met Gln Asp Met 755 760 765 Asp Gly Ser Pro Leu Cys Ile Ile Val Phe Val Leu Ile Met Val Ile 770 775 780 Gly Lys Leu Val Val Leu Asn Leu Phe Ile Ala Leu Leu Leu Asn Ser 785 790 795 800 Phe Ser Asn Glu Glu Lys Asp Gly Ser Leu Glu Gly Glu Thr Arg Lys 805 810 815 Thr Lys Val Gln Leu Ala Leu Asp Arg Phe Arg Arg Ala Phe Ser Phe 820 825 830 Met Leu His Ala Leu Gln Ser Phe Cys Cys Lys Lys Cys Arg Arg Lys 835 840 845 Asn Ser Pro Lys Pro Lys Glu Thr Thr Glu Ser Phe Ala Gly Glu Asn 850 855 860 Lys Asp Ser Ile Leu Pro Asp Ala Arg Pro Trp Lys Glu Tyr Asp Thr 865 870 875 880 Asp Met Ala Leu Tyr Thr Gly Gln Ala Gly Ala Pro Leu Ala Pro Leu 885 890 895 Ala Glu Val Glu Asp Asp Val Glu Tyr Cys Gly Glu Gly Gly Ala Leu 900 905 910 Pro Thr Ser Gln His Ser Ala Gly Val Gln Ala Gly Asp Leu Pro Pro 915 920 925 Glu Thr Lys Gln Leu Thr Ser Pro Asp Asp Gln Gly Val Glu Met Glu 930 935 940 Val Phe Ser Glu Glu Asp Leu His Leu Ser Ile Gln Ser Pro Arg Lys 945 950 955 960 Lys Ser Asp Ala Val Ser Met Leu Ser Glu Cys Ser Thr Ile Asp Leu 965 970 975 Asn Asp Ile Phe Arg Asn Leu Gln Lys Thr Val Ser Pro Lys Lys Gln 980 985 990 Pro Asp Arg Cys Phe Pro Lys Gly Leu Ser Cys His Phe Leu Cys His 995 1000 1005 Lys Thr Asp Lys Arg Lys Ser Pro Trp Val Leu Trp Trp Asn Ile Arg 1010 1015 1020 Lys Thr Cys Tyr Gln Ile Val Lys His Ser Trp Phe Glu Ser Phe Ile 1025 1030 1035 1040 Ile Phe Val Ile Leu Leu Ser Ser Gly Ala Leu Ile Phe Glu Asp Val 1045 1050 1055 Asn Leu Pro Ser Arg Pro Gln Val Glu Lys Leu Leu Arg Cys Thr Asp 1060 1065 1070 Asn Ile Phe Thr Phe Ile Phe Leu Leu Glu Met Ile Leu Lys Trp Val 1075 1080 1085 Ala Phe Gly Phe Arg Arg Tyr Phe Thr Ser Ala Trp Cys Trp Leu Asp 1090 1095 1100 Phe Leu Ile Val Val Val Ser Val Leu Ser Leu Met Asn Leu Pro Ser 1105 1110 1115 1120 Leu Lys Ser Phe Arg Thr Leu Arg Ala Leu Arg Pro Leu Arg Ala Leu 1125 1130 1135 Ser Gln Phe Glu Gly Met Lys Val Val Val Tyr Ala Leu Ile Ser Ala 1140 1145 1150 Ile Pro Ala Ile Leu Asn Val Leu Leu Val Cys Leu Ile Phe Trp Leu 1155 1160 1165 Val Phe Cys Ile Leu Gly Val Asn Leu Phe Ser Gly Lys Phe Gly Arg 1170 1175 1180 Cys Ile Asn Gly Thr Asp Ile Asn Met Tyr Leu Asp Phe Thr Glu Val 1185 1190 1195 1200 Pro Asn Arg Ser Gln Cys Asn Ile Ser Asn Tyr Ser Trp Lys Val Pro 1205 1210 1215 Gln Val Asn Phe Asp Asn Val Gly Asn Ala Tyr Leu Ala Leu Leu Gln 1220 1225 1230 Val Ala Thr Tyr Lys Gly Trp Leu Glu Ile Met Asn Ala Ala Val Asp 1235 1240 1245 Ser Arg Glu Lys Asp Glu Gln Pro Asp Phe Glu Ala Asn Leu Tyr Ala 1250 1255 1260 Tyr Leu Tyr Phe Val Val Phe Ile Ile Phe Gly Ser Phe Phe Thr Leu 1265 1270 1275 1280 Asn Leu Phe Ile Gly Val Ile Ile Asp Asn Phe Asn Gln Gln Gln Lys 1285 1290 1295 Lys Leu Gly Gly Gln Asp Ile Phe Met Thr Glu Glu Gln Lys Lys Tyr 1300 1305 1310 Tyr Asn Ala Met Lys Lys Leu Gly Thr Lys Lys Pro Gln Lys Pro Ile 1315 1320 1325 Pro Arg Pro Leu Asn Arg Cys Gln Ala Phe Val Phe Asp Leu Val Thr 1330 1335 1340 Ser His Val Phe Asp Val Ile Ile Leu Gly Leu Ile Val Leu Asn Met 1345 1350 1355 1360 Ile Ile Met Met Ala Glu Ser Ala Asp Gln Pro Lys Asp Val Lys Lys 1365 1370 1375 Thr Phe Asp Ile Leu Asn Ile Ala Phe Val Val Ile Phe Thr Ile Glu 1380 1385 1390 Cys Leu Ile Lys Val Phe Ala Leu Arg Gln His Tyr Phe Thr Asn Gly 1395 1400 1405 Trp Asn Leu Phe Asp Cys Val Val Val Val Leu Ser Ile Ile Ser Thr 1410 1415 1420 Leu Val Ser Arg Leu Glu Asp Ser Asp Ile Ser Phe Pro Pro Thr Leu 1425 1430 1435 1440 Phe Arg Val Val Arg Leu Ala Arg Ile Gly Arg Ile Leu Arg Leu Val 1445 1450 1455 Arg Ala Ala Arg Gly Ile Arg Thr Leu Leu Phe Ala Leu Met Met Ser 1460 1465 1470 Leu Pro Ser Leu Phe Asn Ile Gly Leu Leu Leu Phe Leu Val Met Phe 1475 1480 1485 Ile Tyr Ala Ile Phe Gly Met Ser Trp Phe Ser Lys Val Lys Lys Gly 1490 1495 1500 Ser Gly Ile Asp Asp Ile Phe Asn Phe Glu Thr Phe Thr Gly Ser Met 1505 1510 1515 1520 Leu Cys Leu Phe Gln Ile Thr Thr Ser Ala Gly Trp Asp Thr Leu Leu 1525 1530 1535 Asn Pro Met Leu Glu Ala Lys Glu His Cys Asn Ser Ser Ser Gln Asp 1540 1545 1550 Ser Cys Gln Gln Pro Gln Ile Ala Val Val Tyr Phe Val Ser Tyr Ile 1555 1560 1565 Ile Ile Ser Phe Leu Ile Val Val Asn Met Tyr Ile Ala Val Ile Leu 1570 1575 1580 Glu Asn Phe Asn Thr Ala Thr Glu Glu Ser Glu Asp Pro Leu Gly Glu 1585 1590 1595 1600 Asp Asp Phe Glu Ile Phe Tyr Glu Val Trp Glu Lys Phe Asp Pro Glu 1605 1610 1615 Ala Ser Gln Phe Ile Gln Tyr Ser Ala Leu Ser Asp Phe Ala Asp Ala 1620 1625 1630 Leu Pro Glu Pro Leu Arg Val Ala Lys Pro Asn Lys Phe Gln Phe Leu 1635 1640 1645 Val Met Asp Leu Pro Met Val Met Gly Asp Arg Leu His Cys Met Asp 1650 1655 1660 Val Leu Phe Ala Phe Thr Thr Arg Val Leu Gly Asp Ser Ser Gly Leu 1665 1670 1675 1680 Asp Thr Met Lys Thr Met Met Glu Glu Lys Phe Met Glu Ala Asn Pro 1685 1690 1695 Phe Lys Lys Leu Tyr Glu Pro Ile Val Thr Thr Thr Lys Arg Lys Glu 1700 1705 1710 Glu Glu Gln Gly Ala Ala Val Ile Gln Arg Ala Tyr Arg Lys His Met 1715 1720 1725 Glu Lys Met Val Lys Leu Arg Leu Lys Asp Arg Ser Ser Ser Ser His 1730 1735 1740 Gln Val Phe Cys Asn Gly Asp Leu Ser Ser Leu Asp Val Ala Lys Val 1745 1750 1755 1760 Lys Val His Asn Asp 1765 4 5822 DNA Mus musculus CDS (19)..(5313) unsure (5804) cDNA sequence of mouse NaN, n = a or c or g or t 4 tctgagccaa gggtgaag atg gag gag agg tac tat cca gtg atc ttc cca 51 Met Glu Glu Arg Tyr Tyr Pro Val Ile Phe Pro 1 5 10 gac gag agg aat ttc cgc ccc ttc act ttc gac tct ttg gct gca ata 99 Asp Glu Arg Asn Phe Arg Pro Phe Thr Phe Asp Ser Leu Ala Ala Ile 15 20 25 gag aag cgg atc acc atc caa aag gag aag aag aaa tcc aaa gac aag 147 Glu Lys Arg Ile Thr Ile Gln Lys Glu Lys Lys Lys Ser Lys Asp Lys 30 35 40 gca gca act gag ccc cag cct cgg cct cag ctc gac cta aag gcc tcc 195 Ala Ala Thr Glu Pro Gln Pro Arg Pro Gln Leu Asp Leu Lys Ala Ser 45 50 55 agg aag tta cct aag ctc tat ggc gac gtt ccc cct gac ctt ata gcg 243 Arg Lys Leu Pro Lys Leu Tyr Gly Asp Val Pro Pro Asp Leu Ile Ala 60 65 70 75 aag ccc ctg gaa gat ctg gac cca ttt tac aaa gac cat aag aca ttc 291 Lys Pro Leu Glu Asp Leu Asp Pro Phe Tyr Lys Asp His Lys Thr Phe 80 85 90 atg gta ttg aac aag aag aga aca atc tat cgc ttc agc gcc aag agg 339 Met Val Leu Asn Lys Lys Arg Thr Ile Tyr Arg Phe Ser Ala Lys Arg 95 100 105 gcc ttg ttc att ctg ggg cct ttt aat ccc atc aga agc ttc atg att 387 Ala Leu Phe Ile Leu Gly Pro Phe Asn Pro Ile Arg Ser Phe Met Ile 110 115 120 cgc atc tct gtc cat tca gtc ttc agc atg ttc att atc tgc aca gtg 435 Arg Ile Ser Val His Ser Val Phe Ser Met Phe Ile Ile Cys Thr Val 125 130 135 atc atc aac tgt atg ttc atg gct aat aat tct tct gtg gac agt cgt 483 Ile Ile Asn Cys Met Phe Met Ala Asn Asn Ser Ser Val Asp Ser Arg 140 145 150 155 cct agc agt aac att ccc gaa tac gtc ttc att ggg att tat gtt tta 531 Pro Ser Ser Asn Ile Pro Glu Tyr Val Phe Ile Gly Ile Tyr Val Leu 160 165 170 gaa gct gtg att aaa ata ttg gca aga ggc ttc att gtg gat gag ttt 579 Glu Ala Val Ile Lys Ile Leu Ala Arg Gly Phe Ile Val Asp Glu Phe 175 180 185 tcc tac ctc cga gat cct tgg aac tgg ctg gac ttc att gtc atc gga 627 Ser Tyr Leu Arg Asp Pro Trp Asn Trp Leu Asp Phe Ile Val Ile Gly 190 195 200 aca gcg ata gcg cct tgt ttt ctc ggt aac aaa gtc aat aat ctt tcc 675 Thr Ala Ile Ala Pro Cys Phe Leu Gly Asn Lys Val Asn Asn Leu Ser 205 210 215 act cta cgt acc ttc cga gtg ttg aga gct ctg aaa gcc att tct gta 723 Thr Leu Arg Thr Phe Arg Val Leu Arg Ala Leu Lys Ala Ile Ser Val 220 225 230 235 atc tca ggt ctg aag gtc atc gtg ggt gcc ctg ctg cgc tcc gtg aag 771 Ile Ser Gly Leu Lys Val Ile Val Gly Ala Leu Leu Arg Ser Val Lys 240 245 250 aag cta gtg gac gtg atg gtc ctc act ctc ttt tgc ctc agc atc ttt 819 Lys Leu Val Asp Val Met Val Leu Thr Leu Phe Cys Leu Ser Ile Phe 255 260 265 gcc ctg gtt ggt cag cag ctc ttc atg gga att ctg agc cag aaa tgt 867 Ala Leu Val Gly Gln Gln Leu Phe Met Gly Ile Leu Ser Gln Lys Cys 270 275 280 att aag gac gac tgt ggc cct aac gct ttt tcc aac aag gat tgc ttt 915 Ile Lys Asp Asp Cys Gly Pro Asn Ala Phe Ser Asn Lys Asp Cys Phe 285 290 295 gta aaa gaa aat gat agc gag gac ttc ata atg tgt ggc aac tgg ctc 963 Val Lys Glu Asn Asp Ser Glu Asp Phe Ile Met Cys Gly Asn Trp Leu 300 305 310 315 ggc aga aga tcc tgc ccc gat ggt tcc acg tgc aat aaa acc aca ttt 1011 Gly Arg Arg Ser Cys Pro Asp Gly Ser Thr Cys Asn Lys Thr Thr Phe 320 325 330 aac cca gat tat aat tat aca aac ttt gac agc ttt ggc tgg tct ttt 1059 Asn Pro Asp Tyr Asn Tyr Thr Asn Phe Asp Ser Phe Gly Trp Ser Phe 335 340 345 ctc gcc atg ttc cgg gtt atg act caa gac tcc tgg gag aag ctt tat 1107 Leu Ala Met Phe Arg Val Met Thr Gln Asp Ser Trp Glu Lys Leu Tyr 350 355 360 cga cag atc ctt cgc acc tcc ggg atc tac ttt gtc ttc ttc ttc gtg 1155 Arg Gln Ile Leu Arg Thr Ser Gly Ile Tyr Phe Val Phe Phe Phe Val 365 370 375 gtc gtc atc ttc ctg ggc tct ttc tac ctg ctt aac tta acc ctg gct 1203 Val Val Ile Phe Leu Gly Ser Phe Tyr Leu Leu Asn Leu Thr Leu Ala 380 385 390 395 gtc gtc acc atg gct tac gag gaa cag aac aga aat gtc gct gcc gag 1251 Val Val Thr Met Ala Tyr Glu Glu Gln Asn Arg Asn Val Ala Ala Glu 400 405 410 aca gag gcc aag gag aag atg ttt cag gaa gcc cag cag ctg ttg agg 1299 Thr Glu Ala Lys Glu Lys Met Phe Gln Glu Ala Gln Gln Leu Leu Arg 415 420 425 gag gaa aag gag gct ctg gtt gcc atg gga att gac aga act tcc ctt 1347 Glu Glu Lys Glu Ala Leu Val Ala Met Gly Ile Asp Arg Thr Ser Leu 430 435 440 aat tcc ctc caa gct tcg tcc ttt tcc cca aag aag agg aag ttt ttt 1395 Asn Ser Leu Gln Ala Ser Ser Phe Ser Pro Lys Lys Arg Lys Phe Phe 445 450 455 ggc agt aag aca aga aag tcc ttc ttt atg aga ggg tcc aag aca gcc 1443 Gly Ser Lys Thr Arg Lys Ser Phe Phe Met Arg Gly Ser Lys Thr Ala 460 465 470 475 cga gcc tca gcg tcc gat tca gag gac gat gcc tct aaa aac cca caa 1491 Arg Ala Ser Ala Ser Asp Ser Glu Asp Asp Ala Ser Lys Asn Pro Gln 480 485 490 ctc ctt gag caa aca aaa cga cta tcc cag aac ttg ccc gta gaa ctc 1539 Leu Leu Glu Gln Thr Lys Arg Leu Ser Gln Asn Leu Pro Val Glu Leu 495 500 505 ttt gat gag cac gtg gac ccc ctc cat agg cag aga gcg ctg agt gcc 1587 Phe Asp Glu His Val Asp Pro Leu His Arg Gln Arg Ala Leu Ser Ala 510 515 520 gtc agt atc tta acc atc acc atg cag gaa caa gaa aaa tcc cag gag 1635 Val Ser Ile Leu Thr Ile Thr Met Gln Glu Gln Glu Lys Ser Gln Glu 525 530 535 cct tgt ttc ccg tgt ggg aaa aac ttg gca tcc aag tac ctg gtg tgg 1683 Pro Cys Phe Pro Cys Gly Lys Asn Leu Ala Ser Lys Tyr Leu Val Trp 540 545 550 555 gaa tgt agc cct ccg tgg ctg tgc ata aag aag gtc ctg cag act atc 1731 Glu Cys Ser Pro Pro Trp Leu Cys Ile Lys Lys Val Leu Gln Thr Ile 560 565 570 atg aca gac ccc ttc act gag ctg gcc atc acc atc tgc atc atc gtc 1779 Met Thr Asp Pro Phe Thr Glu Leu Ala Ile Thr Ile Cys Ile Ile Val 575 580 585 aat act gtc ttc ttg gcc atg gaa cac cac aat atg gat aac tct tta 1827 Asn Thr Val Phe Leu Ala Met Glu His His Asn Met Asp Asn Ser Leu 590 595 600 aaa gac ata ctg aaa ata gga aac tgg gtt ttc act gga att ttc ata 1875 Lys Asp Ile Leu Lys Ile Gly Asn Trp Val Phe Thr Gly Ile Phe Ile 605 610 615 gcg gaa atg tgt ctc aag atc att gcg cta gac cct tac cac tac ttc 1923 Ala Glu Met Cys Leu Lys Ile Ile Ala Leu Asp Pro Tyr His Tyr Phe 620 625 630 635 cgg cac ggc tgg aac atc ttt gac agc att gtg gcc ctt gtg agt ctc 1971 Arg His Gly Trp Asn Ile Phe Asp Ser Ile Val Ala Leu Val Ser Leu 640 645 650 gct gac gtg ctc ttc cac aaa ctg tct aaa aac ctc tcc ttc ttg gct 2019 Ala Asp Val Leu Phe His Lys Leu Ser Lys Asn Leu Ser Phe Leu Ala 655 660 665 tcc ctc aga gtg ctg agg gtc ttc aag tta gcc aaa tcc tgg ccc aca 2067 Ser Leu Arg Val Leu Arg Val Phe Lys Leu Ala Lys Ser Trp Pro Thr 670 675 680 tta aac act ctc att aag atc atc ggc cac tcc gtg ggt gcg ctc gga 2115 Leu Asn Thr Leu Ile Lys Ile Ile Gly His Ser Val Gly Ala Leu Gly 685 690 695 aac ctg act gtg gtc cta acg atc gtg gtc ttc atc ttt tcc gtg gtt 2163 Asn Leu Thr Val Val Leu Thr Ile Val Val Phe Ile Phe Ser Val Val 700 705 710 715 ggc atg cgg ctc ttt ggt gcc aag ttt aac aag act tgc tcc acc tct 2211 Gly Met Arg Leu Phe Gly Ala Lys Phe Asn Lys Thr Cys Ser Thr Ser 720 725 730 ccg gag tcc ctc cgg cgc tgg cac atg ggt gat ttc tac cat tcc ttc 2259 Pro Glu Ser Leu Arg Arg Trp His Met Gly Asp Phe Tyr His Ser Phe 735 740 745 ctg gtg gtg ttc cgc atc ctc tgt ggg gag tgg atc gag aac atg tgg 2307 Leu Val Val Phe Arg Ile Leu Cys Gly Glu Trp Ile Glu Asn Met Trp 750 755 760 gaa tgc atg cag gag atg gaa ggc tcc ccg ctg tgt gtc atc gtc ttt 2355 Glu Cys Met Gln Glu Met Glu Gly Ser Pro Leu Cys Val Ile Val Phe 765 770 775 gtg ctg atc atg gtg gtc ggg aag ctc gtg gtg ctt aac ctc ttc att 2403 Val Leu Ile Met Val Val Gly Lys Leu Val Val Leu Asn Leu Phe Ile 780 785 790 795 gcc ttg ctg ctc aat tcc ttc agc aat gag gaa aag gat ggg aac cca 2451 Ala Leu Leu Leu Asn Ser Phe Ser Asn Glu Glu Lys Asp Gly Asn Pro 800 805 810 gaa gga gag acc agg aaa acc aaa gtg cag cta gcc ctg gat cgg ttc 2499 Glu Gly Glu Thr Arg Lys Thr Lys Val Gln Leu Ala Leu Asp Arg Phe 815 820 825 agc cga gcg ttc tac ttc atg gcg cgc gct ctt cag aat ttc tgt tgc 2547 Ser Arg Ala Phe Tyr Phe Met Ala Arg Ala Leu Gln Asn Phe Cys Cys 830 835 840 aag aga tgc agg agg caa aac tcg cca aag cca aat gag gca aca gaa 2595 Lys Arg Cys Arg Arg Gln Asn Ser Pro Lys Pro Asn Glu Ala Thr Glu 845 850 855 agc ttt gct ggt gag agt aga gac aca gcc acc ctg gat aca agg tcc 2643 Ser Phe Ala Gly Glu Ser Arg Asp Thr Ala Thr Leu Asp Thr Arg Ser 860 865 870 875 tgg aag gag tat gat tca gaa atg act ctg tac act ggg cag gcc ggg 2691 Trp Lys Glu Tyr Asp Ser Glu Met Thr Leu Tyr Thr Gly Gln Ala Gly 880 885 890 gct cca ctg gcc cca ctg gca aaa gaa gag gac gat atg gaa tgt tgt 2739 Ala Pro Leu Ala Pro Leu Ala Lys Glu Glu Asp Asp Met Glu Cys Cys 895 900 905 ggt gaa tgt gat gcc tca cct acc tca cag cct agt gag gaa gct cag 2787 Gly Glu Cys Asp Ala Ser Pro Thr Ser Gln Pro Ser Glu Glu Ala Gln 910 915 920 gcc tgt gac ctc cct ctg aag acc aag cgg ctc ccc agc cca gat gac 2835 Ala Cys Asp Leu Pro Leu Lys Thr Lys Arg Leu Pro Ser Pro Asp Asp 925 930 935 cac ggg gtt gaa atg gaa gtg ttt tcc gaa gaa gat ccg aat tta acc 2883 His Gly Val Glu Met Glu Val Phe Ser Glu Glu Asp Pro Asn Leu Thr 940 945 950 955 ata cag agt gct cga aag aag tct gat gcg gca agc atg ctc tca gaa 2931 Ile Gln Ser Ala Arg Lys Lys Ser Asp Ala Ala Ser Met Leu Ser Glu 960 965 970 tgc agc aca ata gac ctg aat gat atc ttt aga aat tta cag aaa aca 2979 Cys Ser Thr Ile Asp Leu Asn Asp Ile Phe Arg Asn Leu Gln Lys Thr 975 980 985 gtt tcc ccc caa aag caa cca gat cga tgc ttt ccc aag ggc ctc agt 3027 Val Ser Pro Gln Lys Gln Pro Asp Arg Cys Phe Pro Lys Gly Leu Ser 990 995 1000 tgt atc ttt cta tgt tgc aaa aca atc aaa aaa aag tcc ccc tgg gtc 3075 Cys Ile Phe Leu Cys Cys Lys Thr Ile Lys Lys Lys Ser Pro Trp Val 1005 1010 1015 ctg tgg tgg aat ctt cgg aaa acc tgc tac caa atc gtg aag cat agc 3123 Leu Trp Trp Asn Leu Arg Lys Thr Cys Tyr Gln Ile Val Lys His Ser 1020 1025 1030 1035 tgg ttt gag agc ttc ata att ttt gtc atc ctg ctg agc agc gga gca 3171 Trp Phe Glu Ser Phe Ile Ile Phe Val Ile Leu Leu Ser Ser Gly Ala 1040 1045 1050 ctg ata ttc gaa gat gtc aat ctt ccc agc cgg ccc caa gtt gaa aaa 3219 Leu Ile Phe Glu Asp Val Asn Leu Pro Ser Arg Pro Gln Val Glu Lys 1055 1060 1065 tta ctg aag tgt acc gat aat att ttc aca ttt att ttt ctc ctg gaa 3267 Leu Leu Lys Cys Thr Asp Asn Ile Phe Thr Phe Ile Phe Leu Leu Glu 1070 1075 1080 atg att ttg aag tgg gtg gcc ttt gga ttc cgg aag tat ttc acc agt 3315 Met Ile Leu Lys Trp Val Ala Phe Gly Phe Arg Lys Tyr Phe Thr Ser 1085 1090 1095 gcc tgg tgc tgg ctc gat ttc ctc att gtg gtg gtg tct gtg ctc agc 3363 Ala Trp Cys Trp Leu Asp Phe Leu Ile Val Val Val Ser Val Leu Ser 1100 1105 1110 1115 ctc acg aac tta cca aac ttg aag tcc ttc cgg aat ctg cga gcg ctg 3411 Leu Thr Asn Leu Pro Asn Leu Lys Ser Phe Arg Asn Leu Arg Ala Leu 1120 1125 1130 aga cct ctg cgg gca ctg tct cag ttt gaa gga atg aag gtt gtt gtc 3459 Arg Pro Leu Arg Ala Leu Ser Gln Phe Glu Gly Met Lys Val Val Val 1135 1140 1145 aat gcc ctc atg agt gcc ata cct gcc atc ctc aat gtc ttg ctg gtc 3507 Asn Ala Leu Met Ser Ala Ile Pro Ala Ile Leu Asn Val Leu Leu Val 1150 1155 1160 tgc ctc att ttc tgg ctc ata ttt tgt atc ctg gga gta aat ttt ttt 3555 Cys Leu Ile Phe Trp Leu Ile Phe Cys Ile Leu Gly Val Asn Phe Phe 1165 1170 1175 tct ggg aag ttt gga aga tgc att aat gga aca gac ata aat aaa tat 3603 Ser Gly Lys Phe Gly Arg Cys Ile Asn Gly Thr Asp Ile Asn Lys Tyr 1180 1185 1190 1195 ttc aac gct tcc aat gtt cca aac caa agc caa tgt tta gtt agt aat 3651 Phe Asn Ala Ser Asn Val Pro Asn Gln Ser Gln Cys Leu Val Ser Asn 1200 1205 1210 tac acg tgg aaa gtc ccg aat gtc aac ttt gac aac gtg ggg aat gcc 3699 Tyr Thr Trp Lys Val Pro Asn Val Asn Phe Asp Asn Val Gly Asn Ala 1215 1220 1225 tac ctt gcc ctg ctg caa gtg gcg acc tat aag ggc tgg ctg gac att 3747 Tyr Leu Ala Leu Leu Gln Val Ala Thr Tyr Lys Gly Trp Leu Asp Ile 1230 1235 1240 atg aat gca gct gtt gat tcc aga ggg aaa gat gag cag ccg gcc ttt 3795 Met Asn Ala Ala Val Asp Ser Arg Gly Lys Asp Glu Gln Pro Ala Phe 1245 1250 1255 gag gcg aat cta tac gca tac ctt tac ttc gtg gtt ttt atc atc ttc 3843 Glu Ala Asn Leu Tyr Ala Tyr Leu Tyr Phe Val Val Phe Ile Ile Phe 1260 1265 1270 1275 ggc tca ttc ttt acc ctg aac ctc ttt atc ggt gtt att att gac aac 3891 Gly Ser Phe Phe Thr Leu Asn Leu Phe Ile Gly Val Ile Ile Asp Asn 1280 1285 1290 ttc aat cag cag cag aaa aag tta ggt ggc caa gac att ttt atg aca 3939 Phe Asn Gln Gln Gln Lys Lys Leu Gly Gly Gln Asp Ile Phe Met Thr 1295 1300 1305 gaa gaa cag aag aaa tat tac aat gca atg aaa aag tta gga acc aag 3987 Glu Glu Gln Lys Lys Tyr Tyr Asn Ala Met Lys Lys Leu Gly Thr Lys 1310 1315 1320 aag cct caa aag ccc atc cca agg ccc ctg aac aaa tgt caa gcc ttc 4035 Lys Pro Gln Lys Pro Ile Pro Arg Pro Leu Asn Lys Cys Gln Ala Phe 1325 1330 1335 gtg ttc gat ttg gtc aca agc cag gtc ttt gac gtc atc att ctg ggt 4083 Val Phe Asp Leu Val Thr Ser Gln Val Phe Asp Val Ile Ile Leu Gly 1340 1345 1350 1355 ctt att gtc aca aac atg att atc atg atg gct gaa tct gaa ggc cag 4131 Leu Ile Val Thr Asn Met Ile Ile Met Met Ala Glu Ser Glu Gly Gln 1360 1365 1370 ccc aac gaa gtg aag aaa atc ttt gat att ctc aac ata gtc ttc gtg 4179 Pro Asn Glu Val Lys Lys Ile Phe Asp Ile Leu Asn Ile Val Phe Val 1375 1380 1385 gtc atc ttt acc gta gag tgt ctc atc aaa gtc ttt gct ttg agg caa 4227 Val Ile Phe Thr Val Glu Cys Leu Ile Lys Val Phe Ala Leu Arg Gln 1390 1395 1400 cac tac ttc acc aat ggc tgg aac tta ttt gat tgt gtg gtc gtg gtt 4275 His Tyr Phe Thr Asn Gly Trp Asn Leu Phe Asp Cys Val Val Val Val 1405 1410 1415 ctt tcc atc att agt acc ttg gtt tct ggc ttg gag aac agc aac gtc 4323 Leu Ser Ile Ile Ser Thr Leu Val Ser Gly Leu Glu Asn Ser Asn Val 1420 1425 1430 1435 ttc ccg ccc aca ctc ttc agg att gtc cgc ttg gct cgg atc ggt cga 4371 Phe Pro Pro Thr Leu Phe Arg Ile Val Arg Leu Ala Arg Ile Gly Arg 1440 1445 1450 atc ctc aga ctg gtc cgg gcg gct cga gga atc agg aca ctc ctt ttc 4419 Ile Leu Arg Leu Val Arg Ala Ala Arg Gly Ile Arg Thr Leu Leu Phe 1455 1460 1465 gcg ttg atg atg tct ctc ccc tct ctc ttc aac att ggt ctg ctt ctc 4467 Ala Leu Met Met Ser Leu Pro Ser Leu Phe Asn Ile Gly Leu Leu Leu 1470 1475 1480 ttt ctg gtg atg ttc att tat gcc atc ttt ggg atg aac tgg ttt tcc 4515 Phe Leu Val Met Phe Ile Tyr Ala Ile Phe Gly Met Asn Trp Phe Ser 1485 1490 1495 aaa gtg aag aga ggc tct ggg att gat gac atc ttc aac ttt gac act 4563 Lys Val Lys Arg Gly Ser Gly Ile Asp Asp Ile Phe Asn Phe Asp Thr 1500 1505 1510 1515 ttc tcg ggc agc atg ctc tgc ctc ttc cag ata acc act tca gcc ggc 4611 Phe Ser Gly Ser Met Leu Cys Leu Phe Gln Ile Thr Thr Ser Ala Gly 1520 1525 1530 tgg gat gct ctc ctc aac ccc atg ctg gaa tca aaa gcc tct tgc aat 4659 Trp Asp Ala Leu Leu Asn Pro Met Leu Glu Ser Lys Ala Ser Cys Asn 1535 1540 1545 tcc tcc tcc caa gag agc tgt cag cag ccg cag ata gcc ata gtc tac 4707 Ser Ser Ser Gln Glu Ser Cys Gln Gln Pro Gln Ile Ala Ile Val Tyr 1550 1555 1560 ttc gtc agc tac atc atc atc tcc ttt ctc att gtg gtt aac atg tac 4755 Phe Val Ser Tyr Ile Ile Ile Ser Phe Leu Ile Val Val Asn Met Tyr 1565 1570 1575 ata gct gtg att cta gag aac ttc aac aca gcc aca gag gag agc gag 4803 Ile Ala Val Ile Leu Glu Asn Phe Asn Thr Ala Thr Glu Glu Ser Glu 1580 1585 1590 1595 gac ccc ctg ggc gaa gac gac ttt gag atc ttc tat gag atc tgg gag 4851 Asp Pro Leu Gly Glu Asp Asp Phe Glu Ile Phe Tyr Glu Ile Trp Glu 1600 1605 1610 aag ttt gac ccc gaa gca aca cag ttc atc cag tac tca tcc ctc tct 4899 Lys Phe Asp Pro Glu Ala Thr Gln Phe Ile Gln Tyr Ser Ser Leu Ser 1615 1620 1625 gac ttc gcc gac gcc ctg ccc gag ccg ttg cgt gtg gcc aag ccc aac 4947 Asp Phe Ala Asp Ala Leu Pro Glu Pro Leu Arg Val Ala Lys Pro Asn 1630 1635 1640 agg ttt cag ttt ctc atg atg gac ttg ccc atg gtg atg ggt gat cgc 4995 Arg Phe Gln Phe Leu Met Met Asp Leu Pro Met Val Met Gly Asp Arg 1645 1650 1655 ctc cat tgc atg gat gtt ctc ttt gct ttc acc acc agg gtc ctc ggg 5043 Leu His Cys Met Asp Val Leu Phe Ala Phe Thr Thr Arg Val Leu Gly 1660 1665 1670 1675 aac tcc agc ggc ttg gat acc atg aaa gcc atg atg gag gag aag ttc 5091 Asn Ser Ser Gly Leu Asp Thr Met Lys Ala Met Met Glu Glu Lys Phe 1680 1685 1690 atg gag gcc aat cct ttc aag aag ttg tac gag ccc att gtc acc acc 5139 Met Glu Ala Asn Pro Phe Lys Lys Leu Tyr Glu Pro Ile Val Thr Thr 1695 1700 1705 aca aag agg aag gag gag gag gaa tgt gcc gct gtc atc cag agg gcc 5187 Thr Lys Arg Lys Glu Glu Glu Glu Cys Ala Ala Val Ile Gln Arg Ala 1710 1715 1720 tac cgg aga cac atg gag aag atg atc aag ctg aag ctg aaa ggc agg 5235 Tyr Arg Arg His Met Glu Lys Met Ile Lys Leu Lys Leu Lys Gly Arg 1725 1730 1735 tca agt tca tcg ctc cag gtg ttt tgc aat gga gac ttg tct agc ttg 5283 Ser Ser Ser Ser Leu Gln Val Phe Cys Asn Gly Asp Leu Ser Ser Leu 1740 1745 1750 1755 gat gtg ccc aag atc aag gtt cat tgt gac tgaaaccccc acctgcacgc 5333 Asp Val Pro Lys Ile Lys Val His Cys Asp 1760 1765 ctacctcaca gcctcacagc tcagccccca gcctctggcg aacaagcggc ggactcaccg 5393 aacaggccgt tcaacttgtt tttttgggtg aaagaggtga taggttggtg tccattttta 5453 aatgattctt ggaaagattg aacgtcggaa catgttagaa aggactgcca aggacatcca 5513 cagtaacgga aggcctgaag gacagttcaa attatgtaaa gaaacgagaa ggaaaggtca 5573 catgtctgtt cagttttaag tatgtgacct gccacatgta gctcctttgc atgttaagtg 5633 agaagtcaaa accctgccat aagtaaatag ctttgttgca ggtgtttcta ccagtgctgc 5693 ggatttgggt gtatggctca aacctgaaag catgactctg acttgtcagc accccaactt 5753 tcagaagctc tgatctctgt cctaggtgtt tgacaaataa atacataaaa naaaaaaaaa 5813 aaaaaaaaa 5822 5 1765 PRT Mus musculus 5 Met Glu Glu Arg Tyr Tyr Pro Val Ile Phe Pro Asp Glu Arg Asn Phe 1 5 10 15 Arg Pro Phe Thr Phe Asp Ser Leu Ala Ala Ile Glu Lys Arg Ile Thr 20 25 30 Ile Gln Lys Glu Lys Lys Lys Ser Lys Asp Lys Ala Ala Thr Glu Pro 35 40 45 Gln Pro Arg Pro Gln Leu Asp Leu Lys Ala Ser Arg Lys Leu Pro Lys 50 55 60 Leu Tyr Gly Asp Val Pro Pro Asp Leu Ile Ala Lys Pro Leu Glu Asp 65 70 75 80 Leu Asp Pro Phe Tyr Lys Asp His Lys Thr Phe Met Val Leu Asn Lys 85 90 95 Lys Arg Thr Ile Tyr Arg Phe Ser Ala Lys Arg Ala Leu Phe Ile Leu 100 105 110 Gly Pro Phe Asn Pro Ile Arg Ser Phe Met Ile Arg Ile Ser Val His 115 120 125 Ser Val Phe Ser Met Phe Ile Ile Cys Thr Val Ile Ile Asn Cys Met 130 135 140 Phe Met Ala Asn Asn Ser Ser Val Asp Ser Arg Pro Ser Ser Asn Ile 145 150 155 160 Pro Glu Tyr Val Phe Ile Gly Ile Tyr Val Leu Glu Ala Val Ile Lys 165 170 175 Ile Leu Ala Arg Gly Phe Ile Val Asp Glu Phe Ser Tyr Leu Arg Asp 180 185 190 Pro Trp Asn Trp Leu Asp Phe Ile Val Ile Gly Thr Ala Ile Ala Pro 195 200 205 Cys Phe Leu Gly Asn Lys Val Asn Asn Leu Ser Thr Leu Arg Thr Phe 210 215 220 Arg Val Leu Arg Ala Leu Lys Ala Ile Ser Val Ile Ser Gly Leu Lys 225 230 235 240 Val Ile Val Gly Ala Leu Leu Arg Ser Val Lys Lys Leu Val Asp Val 245 250 255 Met Val Leu Thr Leu Phe Cys Leu Ser Ile Phe Ala Leu Val Gly Gln 260 265 270 Gln Leu Phe Met Gly Ile Leu Ser Gln Lys Cys Ile Lys Asp Asp Cys 275 280 285 Gly Pro Asn Ala Phe Ser Asn Lys Asp Cys Phe Val Lys Glu Asn Asp 290 295 300 Ser Glu Asp Phe Ile Met Cys Gly Asn Trp Leu Gly Arg Arg Ser Cys 305 310 315 320 Pro Asp Gly Ser Thr Cys Asn Lys Thr Thr Phe Asn Pro Asp Tyr Asn 325 330 335 Tyr Thr Asn Phe Asp Ser Phe Gly Trp Ser Phe Leu Ala Met Phe Arg 340 345 350 Val Met Thr Gln Asp Ser Trp Glu Lys Leu Tyr Arg Gln Ile Leu Arg 355 360 365 Thr Ser Gly Ile Tyr Phe Val Phe Phe Phe Val Val Val Ile Phe Leu 370 375 380 Gly Ser Phe Tyr Leu Leu Asn Leu Thr Leu Ala Val Val Thr Met Ala 385 390 395 400 Tyr Glu Glu Gln Asn Arg Asn Val Ala Ala Glu Thr Glu Ala Lys Glu 405 410 415 Lys Met Phe Gln Glu Ala Gln Gln Leu Leu Arg Glu Glu Lys Glu Ala 420 425 430 Leu Val Ala Met Gly Ile Asp Arg Thr Ser Leu Asn Ser Leu Gln Ala 435 440 445 Ser Ser Phe Ser Pro Lys Lys Arg Lys Phe Phe Gly Ser Lys Thr Arg 450 455 460 Lys Ser Phe Phe Met Arg Gly Ser Lys Thr Ala Arg Ala Ser Ala Ser 465 470 475 480 Asp Ser Glu Asp Asp Ala Ser Lys Asn Pro Gln Leu Leu Glu Gln Thr 485 490 495 Lys Arg Leu Ser Gln Asn Leu Pro Val Glu Leu Phe Asp Glu His Val 500 505 510 Asp Pro Leu His Arg Gln Arg Ala Leu Ser Ala Val Ser Ile Leu Thr 515 520 525 Ile Thr Met Gln Glu Gln Glu Lys Ser Gln Glu Pro Cys Phe Pro Cys 530 535 540 Gly Lys Asn Leu Ala Ser Lys Tyr Leu Val Trp Glu Cys Ser Pro Pro 545 550 555 560 Trp Leu Cys Ile Lys Lys Val Leu Gln Thr Ile Met Thr Asp Pro Phe 565 570 575 Thr Glu Leu Ala Ile Thr Ile Cys Ile Ile Val Asn Thr Val Phe Leu 580 585 590 Ala Met Glu His His Asn Met Asp Asn Ser Leu Lys Asp Ile Leu Lys 595 600 605 Ile Gly Asn Trp Val Phe Thr Gly Ile Phe Ile Ala Glu Met Cys Leu 610 615 620 Lys Ile Ile Ala Leu Asp Pro Tyr His Tyr Phe Arg His Gly Trp Asn 625 630 635 640 Ile Phe Asp Ser Ile Val Ala Leu Val Ser Leu Ala Asp Val Leu Phe 645 650 655 His Lys Leu Ser Lys Asn Leu Ser Phe Leu Ala Ser Leu Arg Val Leu 660 665 670 Arg Val Phe Lys Leu Ala Lys Ser Trp Pro Thr Leu Asn Thr Leu Ile 675 680 685 Lys Ile Ile Gly His Ser Val Gly Ala Leu Gly Asn Leu Thr Val Val 690 695 700 Leu Thr Ile Val Val Phe Ile Phe Ser Val Val Gly Met Arg Leu Phe 705 710 715 720 Gly Ala Lys Phe Asn Lys Thr Cys Ser Thr Ser Pro Glu Ser Leu Arg 725 730 735 Arg Trp His Met Gly Asp Phe Tyr His Ser Phe Leu Val Val Phe Arg 740 745 750 Ile Leu Cys Gly Glu Trp Ile Glu Asn Met Trp Glu Cys Met Gln Glu 755 760 765 Met Glu Gly Ser Pro Leu Cys Val Ile Val Phe Val Leu Ile Met Val 770 775 780 Val Gly Lys Leu Val Val Leu Asn Leu Phe Ile Ala Leu Leu Leu Asn 785 790 795 800 Ser Phe Ser Asn Glu Glu Lys Asp Gly Asn Pro Glu Gly Glu Thr Arg 805 810 815 Lys Thr Lys Val Gln Leu Ala Leu Asp Arg Phe Ser Arg Ala Phe Tyr 820 825 830 Phe Met Ala Arg Ala Leu Gln Asn Phe Cys Cys Lys Arg Cys Arg Arg 835 840 845 Gln Asn Ser Pro Lys Pro Asn Glu Ala Thr Glu Ser Phe Ala Gly Glu 850 855 860 Ser Arg Asp Thr Ala Thr Leu Asp Thr Arg Ser Trp Lys Glu Tyr Asp 865 870 875 880 Ser Glu Met Thr Leu Tyr Thr Gly Gln Ala Gly Ala Pro Leu Ala Pro 885 890 895 Leu Ala Lys Glu Glu Asp Asp Met Glu Cys Cys Gly Glu Cys Asp Ala 900 905 910 Ser Pro Thr Ser Gln Pro Ser Glu Glu Ala Gln Ala Cys Asp Leu Pro 915 920 925 Leu Lys Thr Lys Arg Leu Pro Ser Pro Asp Asp His Gly Val Glu Met 930 935 940 Glu Val Phe Ser Glu Glu Asp Pro Asn Leu Thr Ile Gln Ser Ala Arg 945 950 955 960 Lys Lys Ser Asp Ala Ala Ser Met Leu Ser Glu Cys Ser Thr Ile Asp 965 970 975 Leu Asn Asp Ile Phe Arg Asn Leu Gln Lys Thr Val Ser Pro Gln Lys 980 985 990 Gln Pro Asp Arg Cys Phe Pro Lys Gly Leu Ser Cys Ile Phe Leu Cys 995 1000 1005 Cys Lys Thr Ile Lys Lys Lys Ser Pro Trp Val Leu Trp Trp Asn Leu 1010 1015 1020 Arg Lys Thr Cys Tyr Gln Ile Val Lys His Ser Trp Phe Glu Ser Phe 1025 1030 1035 1040 Ile Ile Phe Val Ile Leu Leu Ser Ser Gly Ala Leu Ile Phe Glu Asp 1045 1050 1055 Val Asn Leu Pro Ser Arg Pro Gln Val Glu Lys Leu Leu Lys Cys Thr 1060 1065 1070 Asp Asn Ile Phe Thr Phe Ile Phe Leu Leu Glu Met Ile Leu Lys Trp 1075 1080 1085 Val Ala Phe Gly Phe Arg Lys Tyr Phe Thr Ser Ala Trp Cys Trp Leu 1090 1095 1100 Asp Phe Leu Ile Val Val Val Ser Val Leu Ser Leu Thr Asn Leu Pro 1105 1110 1115 1120 Asn Leu Lys Ser Phe Arg Asn Leu Arg Ala Leu Arg Pro Leu Arg Ala 1125 1130 1135 Leu Ser Gln Phe Glu Gly Met Lys Val Val Val Asn Ala Leu Met Ser 1140 1145 1150 Ala Ile Pro Ala Ile Leu Asn Val Leu Leu Val Cys Leu Ile Phe Trp 1155 1160 1165 Leu Ile Phe Cys Ile Leu Gly Val Asn Phe Phe Ser Gly Lys Phe Gly 1170 1175 1180 Arg Cys Ile Asn Gly Thr Asp Ile Asn Lys Tyr Phe Asn Ala Ser Asn 1185 1190 1195 1200 Val Pro Asn Gln Ser Gln Cys Leu Val Ser Asn Tyr Thr Trp Lys Val 1205 1210 1215 Pro Asn Val Asn Phe Asp Asn Val Gly Asn Ala Tyr Leu Ala Leu Leu 1220 1225 1230 Gln Val Ala Thr Tyr Lys Gly Trp Leu Asp Ile Met Asn Ala Ala Val 1235 1240 1245 Asp Ser Arg Gly Lys Asp Glu Gln Pro Ala Phe Glu Ala Asn Leu Tyr 1250 1255 1260 Ala Tyr Leu Tyr Phe Val Val Phe Ile Ile Phe Gly Ser Phe Phe Thr 1265 1270 1275 1280 Leu Asn Leu Phe Ile Gly Val Ile Ile Asp Asn Phe Asn Gln Gln Gln 1285 1290 1295 Lys Lys Leu Gly Gly Gln Asp Ile Phe Met Thr Glu Glu Gln Lys Lys 1300 1305 1310 Tyr Tyr Asn Ala Met Lys Lys Leu Gly Thr Lys Lys Pro Gln Lys Pro 1315 1320 1325 Ile Pro Arg Pro Leu Asn Lys Cys Gln Ala Phe Val Phe Asp Leu Val 1330 1335 1340 Thr Ser Gln Val Phe Asp Val Ile Ile Leu Gly Leu Ile Val Thr Asn 1345 1350 1355 1360 Met Ile Ile Met Met Ala Glu Ser Glu Gly Gln Pro Asn Glu Val Lys 1365 1370 1375 Lys Ile Phe Asp Ile Leu Asn Ile Val Phe Val Val Ile Phe Thr Val 1380 1385 1390 Glu Cys Leu Ile Lys Val Phe Ala Leu Arg Gln His Tyr Phe Thr Asn 1395 1400 1405 Gly Trp Asn Leu Phe Asp Cys Val Val Val Val Leu Ser Ile Ile Ser 1410 1415 1420 Thr Leu Val Ser Gly Leu Glu Asn Ser Asn Val Phe Pro Pro Thr Leu 1425 1430 1435 1440 Phe Arg Ile Val Arg Leu Ala Arg Ile Gly Arg Ile Leu Arg Leu Val 1445 1450 1455 Arg Ala Ala Arg Gly Ile Arg Thr Leu Leu Phe Ala Leu Met Met Ser 1460 1465 1470 Leu Pro Ser Leu Phe Asn Ile Gly Leu Leu Leu Phe Leu Val Met Phe 1475 1480 1485 Ile Tyr Ala Ile Phe Gly Met Asn Trp Phe Ser Lys Val Lys Arg Gly 1490 1495 1500 Ser Gly Ile Asp Asp Ile Phe Asn Phe Asp Thr Phe Ser Gly Ser Met 1505 1510 1515 1520 Leu Cys Leu Phe Gln Ile Thr Thr Ser Ala Gly Trp Asp Ala Leu Leu 1525 1530 1535 Asn Pro Met Leu Glu Ser Lys Ala Ser Cys Asn Ser Ser Ser Gln Glu 1540 1545 1550 Ser Cys Gln Gln Pro Gln Ile Ala Ile Val Tyr Phe Val Ser Tyr Ile 1555 1560 1565 Ile Ile Ser Phe Leu Ile Val Val Asn Met Tyr Ile Ala Val Ile Leu 1570 1575 1580 Glu Asn Phe Asn Thr Ala Thr Glu Glu Ser Glu Asp Pro Leu Gly Glu 1585 1590 1595 1600 Asp Asp Phe Glu Ile Phe Tyr Glu Ile Trp Glu Lys Phe Asp Pro Glu 1605 1610 1615 Ala Thr Gln Phe Ile Gln Tyr Ser Ser Leu Ser Asp Phe Ala Asp Ala 1620 1625 1630 Leu Pro Glu Pro Leu Arg Val Ala Lys Pro Asn Arg Phe Gln Phe Leu 1635 1640 1645 Met Met Asp Leu Pro Met Val Met Gly Asp Arg Leu His Cys Met Asp 1650 1655 1660 Val Leu Phe Ala Phe Thr Thr Arg Val Leu Gly Asn Ser Ser Gly Leu 1665 1670 1675 1680 Asp Thr Met Lys Ala Met Met Glu Glu Lys Phe Met Glu Ala Asn Pro 1685 1690 1695 Phe Lys Lys Leu Tyr Glu Pro Ile Val Thr Thr Thr Lys Arg Lys Glu 1700 1705 1710 Glu Glu Glu Cys Ala Ala Val Ile Gln Arg Ala Tyr Arg Arg His Met 1715 1720 1725 Glu Lys Met Ile Lys Leu Lys Leu Lys Gly Arg Ser Ser Ser Ser Leu 1730 1735 1740 Gln Val Phe Cys Asn Gly Asp Leu Ser Ser Leu Asp Val Pro Lys Ile 1745 1750 1755 1760 Lys Val His Cys Asp 1765 6 3701 DNA Homo sapiens CDS (1)..(3699) partial human NaN cDNA sequence 6 tcc att gtc att gga ata gcg att gtg tca tat att cca gga atc acc 48 Ser Ile Val Ile Gly Ile Ala Ile Val Ser Tyr Ile Pro Gly Ile Thr 1 5 10 15 atc aaa cta ttg ccc ctg cgt acc ttc cgt gtg ttc aga gct ttg aaa 96 Ile Lys Leu Leu Pro Leu Arg Thr Phe Arg Val Phe Arg Ala Leu Lys 20 25 30 gca att tca gta gtt tca cgt ctg aag gtc atc gtg ggg gcc ttg cta 144 Ala Ile Ser Val Val Ser Arg Leu Lys Val Ile Val Gly Ala Leu Leu 35 40 45 cgc tct gtg aag aag ctg gtc aac gtg att atc ctc acc ttc ttt tgc 192 Arg Ser Val Lys Lys Leu Val Asn Val Ile Ile Leu Thr Phe Phe Cys 50 55 60 ctc agc atc ttt gcc ctg gta ggt cag cag ctc ttc atg gga agt ctg 240 Leu Ser Ile Phe Ala Leu Val Gly Gln Gln Leu Phe Met Gly Ser Leu 65 70 75 80 aac ctg aaa tgc atc tcg agg gac tgt aaa aat atc agt aac ccg gaa 288 Asn Leu Lys Cys Ile Ser Arg Asp Cys Lys Asn Ile Ser Asn Pro Glu 85 90 95 gct tat gac cat tgc ttt gaa aag aaa gaa aat tca cct gaa ttc aaa 336 Ala Tyr Asp His Cys Phe Glu Lys Lys Glu Asn Ser Pro Glu Phe Lys 100 105 110 atg tgt ggc atc tgg atg ggt aac agt gcc tgt tcc ata caa tat gaa 384 Met Cys Gly Ile Trp Met Gly Asn Ser Ala Cys Ser Ile Gln Tyr Glu 115 120 125 tgt aag cac acc aaa att aat cct gac tat aat tat acg aat ttt gac 432 Cys Lys His Thr Lys Ile Asn Pro Asp Tyr Asn Tyr Thr Asn Phe Asp 130 135 140 aac ttt ggc tgg tct ttt ctt gcc atg ttc cgg ctg atg acc caa gat 480 Asn Phe Gly Trp Ser Phe Leu Ala Met Phe Arg Leu Met Thr Gln Asp 145 150 155 160 tcc tgg gag aag ctt tat caa cag acc ctg cgt act act ggg ctc tac 528 Ser Trp Glu Lys Leu Tyr Gln Gln Thr Leu Arg Thr Thr Gly Leu Tyr 165 170 175 tca gtc ttc ttc ttc att gtg gtc att ttc ctg ggc tcc ttc tac ctg 576 Ser Val Phe Phe Phe Ile Val Val Ile Phe Leu Gly Ser Phe Tyr Leu 180 185 190 att aac tta acc ctg gct gtt gtt acc atg gca tat gag gag cag aac 624 Ile Asn Leu Thr Leu Ala Val Val Thr Met Ala Tyr Glu Glu Gln Asn 195 200 205 aag aat gta gct gca gag ata gag gcc aag gaa aag atg ttt cag gaa 672 Lys Asn Val Ala Ala Glu Ile Glu Ala Lys Glu Lys Met Phe Gln Glu 210 215 220 gcc cag cag ctg tta aag gag gaa aag gag gct ctg gtt gcc atg gga 720 Ala Gln Gln Leu Leu Lys Glu Glu Lys Glu Ala Leu Val Ala Met Gly 225 230 235 240 att gac aga agt tca ctt act tcc ctt gaa aca tca tat ttt acc cca 768 Ile Asp Arg Ser Ser Leu Thr Ser Leu Glu Thr Ser Tyr Phe Thr Pro 245 250 255 aaa aag aga aag ctc ttt ggt aat aag aaa agg aag tcc ttc ttt ttg 816 Lys Lys Arg Lys Leu Phe Gly Asn Lys Lys Arg Lys Ser Phe Phe Leu 260 265 270 aga gag tct ggg aaa gac cag cct cct ggg tca gat tct gat gaa gat 864 Arg Glu Ser Gly Lys Asp Gln Pro Pro Gly Ser Asp Ser Asp Glu Asp 275 280 285 tgc caa aaa aag cca cag ctc cta gag caa acc aaa cga ctg tcc cag 912 Cys Gln Lys Lys Pro Gln Leu Leu Glu Gln Thr Lys Arg Leu Ser Gln 290 295 300 aat cta tca ytg gac cac ttt gat gag cat gga gat cct ctc caa agg 960 Asn Leu Ser Xaa Asp His Phe Asp Glu His Gly Asp Pro Leu Gln Arg 305 310 315 320 cag aga gca ctg agt gct gtc agc atc ctc acc atc acc atg aag gaa 1008 Gln Arg Ala Leu Ser Ala Val Ser Ile Leu Thr Ile Thr Met Lys Glu 325 330 335 caa gaa aaa tca caa gag cct tgt ctc cct tgt gga gaa aac ctg gca 1056 Gln Glu Lys Ser Gln Glu Pro Cys Leu Pro Cys Gly Glu Asn Leu Ala 340 345 350 tcc aag tac ctc gtg tgg aac tgt tgc ccc cag tgg ctg tgc gtt aag 1104 Ser Lys Tyr Leu Val Trp Asn Cys Cys Pro Gln Trp Leu Cys Val Lys 355 360 365 aag gtc ctg aga act gtg atg act gac ccg ttt act gag ctg gcc atc 1152 Lys Val Leu Arg Thr Val Met Thr Asp Pro Phe Thr Glu Leu Ala Ile 370 375 380 acc atc tgc atc atc atc aac act gtc ttc ttg gcc atg gag cat cac 1200 Thr Ile Cys Ile Ile Ile Asn Thr Val Phe Leu Ala Met Glu His His 385 390 395 400 aag atg gag gcc agt ttt gag aag atg ttg aat ata ggg aat ttg gtt 1248 Lys Met Glu Ala Ser Phe Glu Lys Met Leu Asn Ile Gly Asn Leu Val 405 410 415 ttc act agc att ttt ata gca gaa atg tgc cta aaa atc att gcg ctc 1296 Phe Thr Ser Ile Phe Ile Ala Glu Met Cys Leu Lys Ile Ile Ala Leu 420 425 430 gat ccc tac cac tac ttt cgc cga ggc tgg aac att ttt gac agc att 1344 Asp Pro Tyr His Tyr Phe Arg Arg Gly Trp Asn Ile Phe Asp Ser Ile 435 440 445 gtt gct ctt ctg agt ttt gca gat gta atg aac tgt gta ctt caa aag 1392 Val Ala Leu Leu Ser Phe Ala Asp Val Met Asn Cys Val Leu Gln Lys 450 455 460 aga agc tgg cca ttc ttg cgt tcc ttc aga gtg ctc agg gtc ttc aag 1440 Arg Ser Trp Pro Phe Leu Arg Ser Phe Arg Val Leu Arg Val Phe Lys 465 470 475 480 tta gcc aaa tcc tgg cca act ttg aac aca cta att aag ata atc ggc 1488 Leu Ala Lys Ser Trp Pro Thr Leu Asn Thr Leu Ile Lys Ile Ile Gly 485 490 495 aac tct gtc gga gcc ctt gga agc ctg act gtg gtc ctg gtc att gtg 1536 Asn Ser Val Gly Ala Leu Gly Ser Leu Thr Val Val Leu Val Ile Val 500 505 510 atc ttt att ttc tca gta gtt ggc atg cag ctt ttt ggc cgt agc ttc 1584 Ile Phe Ile Phe Ser Val Val Gly Met Gln Leu Phe Gly Arg Ser Phe 515 520 525 aat tcc caa aag agt cca aaa ctc tgt aac ccg aca ggc ccg aca gtc 1632 Asn Ser Gln Lys Ser Pro Lys Leu Cys Asn Pro Thr Gly Pro Thr Val 530 535 540 tca tgt tta cgg cac tgg cac atg ggg gat ttc tgg cac tcc ttc cta 1680 Ser Cys Leu Arg His Trp His Met Gly Asp Phe Trp His Ser Phe Leu 545 550 555 560 gtg gta ttc cgc atc ctc tgc ggg gaa tgg atc gaa aat atg tgg gaa 1728 Val Val Phe Arg Ile Leu Cys Gly Glu Trp Ile Glu Asn Met Trp Glu 565 570 575 tgt atg caa gaa gcg aat gca tca tca tca ttg tgt gtt att gtc ttc 1776 Cys Met Gln Glu Ala Asn Ala Ser Ser Ser Leu Cys Val Ile Val Phe 580 585 590 ata ttg atc acg gtg ata gga aaa ctt gtg gtg ctc aac ctc ttc att 1824 Ile Leu Ile Thr Val Ile Gly Lys Leu Val Val Leu Asn Leu Phe Ile 595 600 605 gcc tta ctg ctc aat tcc ttt agc aat gag gaa aga aat gga aac tta 1872 Ala Leu Leu Leu Asn Ser Phe Ser Asn Glu Glu Arg Asn Gly Asn Leu 610 615 620 gaa gga gag gcc agg aaa act aaa gtc cag tta gca ctg gat cga ttc 1920 Glu Gly Glu Ala Arg Lys Thr Lys Val Gln Leu Ala Leu Asp Arg Phe 625 630 635 640 cgc cgg gct ttt tgt ttt gtg aga cac act ctt gag cat ttc tgt cac 1968 Arg Arg Ala Phe Cys Phe Val Arg His Thr Leu Glu His Phe Cys His 645 650 655 aag tgg tgc agg aag caa aac tta cca cag caa aaa gag gtg gca gga 2016 Lys Trp Cys Arg Lys Gln Asn Leu Pro Gln Gln Lys Glu Val Ala Gly 660 665 670 ggc tgt gct gca caa agc aaa gac atc att ccc ctg gtc atg gag atg 2064 Gly Cys Ala Ala Gln Ser Lys Asp Ile Ile Pro Leu Val Met Glu Met 675 680 685 aaa agg ggc tca gag acc cag gag gag ctt ggt ata cta acc tct gta 2112 Lys Arg Gly Ser Glu Thr Gln Glu Glu Leu Gly Ile Leu Thr Ser Val 690 695 700 cca aag acc ctg ggc gtc agg cat gat tgg act tgg ttg gca cca ctt 2160 Pro Lys Thr Leu Gly Val Arg His Asp Trp Thr Trp Leu Ala Pro Leu 705 710 715 720 gcg gag gag gaa gat gac gtt gaa ttt tct ggt gaa gat aat gca cag 2208 Ala Glu Glu Glu Asp Asp Val Glu Phe Ser Gly Glu Asp Asn Ala Gln 725 730 735 cgc atc aca caa cct gag cct gaa caa cag gcc tat gag ctc cat cag 2256 Arg Ile Thr Gln Pro Glu Pro Glu Gln Gln Ala Tyr Glu Leu His Gln 740 745 750 gag aac aag aag ccc acg agc cag aga gtt caa agt gtg gaa att gac 2304 Glu Asn Lys Lys Pro Thr Ser Gln Arg Val Gln Ser Val Glu Ile Asp 755 760 765 atg ttc tct gaa gat gag cct cat ctg acc ata cag gat ccc cga aag 2352 Met Phe Ser Glu Asp Glu Pro His Leu Thr Ile Gln Asp Pro Arg Lys 770 775 780 aag tct gat gtt acc agt ata cta tca gaa tgt agc acc att gat ctt 2400 Lys Ser Asp Val Thr Ser Ile Leu Ser Glu Cys Ser Thr Ile Asp Leu 785 790 795 800 cag gat ggc ttt gga tgg tta cct gag atg gtt ccc aaa aag caa cca 2448 Gln Asp Gly Phe Gly Trp Leu Pro Glu Met Val Pro Lys Lys Gln Pro 805 810 815 gag aga tgt ttg ccc aaa ggc ttt ggt tgc tgc ttt cca tgc tgt agc 2496 Glu Arg Cys Leu Pro Lys Gly Phe Gly Cys Cys Phe Pro Cys Cys Ser 820 825 830 gtg gac aag aga aag cct ccc tgg gtc att tgg tgg aac ctg cgg aaa 2544 Val Asp Lys Arg Lys Pro Pro Trp Val Ile Trp Trp Asn Leu Arg Lys 835 840 845 acc tgc tac caa ata gtg aaa cac agc tgg ttt gag agc ttt att atc 2592 Thr Cys Tyr Gln Ile Val Lys His Ser Trp Phe Glu Ser Phe Ile Ile 850 855 860 ttt gtg att ctg ctg agc agt ggg gca ctg ata ttt gaa gat gtt cac 2640 Phe Val Ile Leu Leu Ser Ser Gly Ala Leu Ile Phe Glu Asp Val His 865 870 875 880 ctt gag aac caa ccc aaa atc caa gaa tta cta aat tgt act gac att 2688 Leu Glu Asn Gln Pro Lys Ile Gln Glu Leu Leu Asn Cys Thr Asp Ile 885 890 895 att ttt aca cat att ttt atc ctg gag atg gta cta aaa tgg gta gcc 2736 Ile Phe Thr His Ile Phe Ile Leu Glu Met Val Leu Lys Trp Val Ala 900 905 910 ttc gga ttt gga aag tat ttc acc agt gcc tgg tgc tgc ctt gat ttc 2784 Phe Gly Phe Gly Lys Tyr Phe Thr Ser Ala Trp Cys Cys Leu Asp Phe 915 920 925 atc att gtg att gtc tct gtg acc acc ctc att aac tta atg gaa ttg 2832 Ile Ile Val Ile Val Ser Val Thr Thr Leu Ile Asn Leu Met Glu Leu 930 935 940 aag tcc ttc cgg act cta cga gca ctg agg cct ctt cgt gcg ctg tcc 2880 Lys Ser Phe Arg Thr Leu Arg Ala Leu Arg Pro Leu Arg Ala Leu Ser 945 950 955 960 cag ttt gaa gga atg aag gtg gtg gtc aat gct ctc ata ggt gcc ata 2928 Gln Phe Glu Gly Met Lys Val Val Val Asn Ala Leu Ile Gly Ala Ile 965 970 975 cct gcc att ctg aat gtt ttg ctt gtc tgc ctc att ttc tgg ctc gta 2976 Pro Ala Ile Leu Asn Val Leu Leu Val Cys Leu Ile Phe Trp Leu Val 980 985 990 ttt tgt att ctg gga gta tac ttc ttt tct gga aaa ttt ggg aaa tgc 3024 Phe Cys Ile Leu Gly Val Tyr Phe Phe Ser Gly Lys Phe Gly Lys Cys 995 1000 1005 att aat gga aca gac tca gtt ata aat tat acc atc att aca aat aaa 3072 Ile Asn Gly Thr Asp Ser Val Ile Asn Tyr Thr Ile Ile Thr Asn Lys 1010 1015 1020 agt caa tgt gaa agt ggc aat ttc tct tgg atc aac cag aaa gtc aac 3120 Ser Gln Cys Glu Ser Gly Asn Phe Ser Trp Ile Asn Gln Lys Val Asn 1025 1030 1035 1040 ttt gac aat gtg gga aat gct tac ctc gct ctg ctg caa gtg gca aca 3168 Phe Asp Asn Val Gly Asn Ala Tyr Leu Ala Leu Leu Gln Val Ala Thr 1045 1050 1055 ttt aag ggc tgg atg gat att ata tat gca gct gtt gat tcc aca gag 3216 Phe Lys Gly Trp Met Asp Ile Ile Tyr Ala Ala Val Asp Ser Thr Glu 1060 1065 1070 aaa gaa caa cag cca gag ttt gag agc aat tca ctc ggt tac att tac 3264 Lys Glu Gln Gln Pro Glu Phe Glu Ser Asn Ser Leu Gly Tyr Ile Tyr 1075 1080 1085 ttc gta gtc ttt atc atc ttt ggc tca ttc ttc act ctg aat ctc ttc 3312 Phe Val Val Phe Ile Ile Phe Gly Ser Phe Phe Thr Leu Asn Leu Phe 1090 1095 1100 att ggc gtt atc att gac aac ttc aac caa cag cag aaa aag tta ggt 3360 Ile Gly Val Ile Ile Asp Asn Phe Asn Gln Gln Gln Lys Lys Leu Gly 1105 1110 1115 1120 ggc caa gac att ttt atg aca gaa gaa cag aag aaa tac tat aat gca 3408 Gly Gln Asp Ile Phe Met Thr Glu Glu Gln Lys Lys Tyr Tyr Asn Ala 1125 1130 1135 atg aaa aaa tta gga tcc aaa aaa cct caa aaa ccc att cca cgg cct 3456 Met Lys Lys Leu Gly Ser Lys Lys Pro Gln Lys Pro Ile Pro Arg Pro 1140 1145 1150 ctg aac aaa tgt caa ggt ctc gtg ttc gac ata gtc aca agc cag atc 3504 Leu Asn Lys Cys Gln Gly Leu Val Phe Asp Ile Val Thr Ser Gln Ile 1155 1160 1165 ttt gac atc atc atc ata agt ctc att atc cta aac atg att agc atg 3552 Phe Asp Ile Ile Ile Ile Ser Leu Ile Ile Leu Asn Met Ile Ser Met 1170 1175 1180 atg gct gaa tca tac aac caa ccc aaa gcc atg aaa tcc atc ctt gac 3600 Met Ala Glu Ser Tyr Asn Gln Pro Lys Ala Met Lys Ser Ile Leu Asp 1185 1190 1195 1200 cat ctc aac tgg gtc ttt gtg gtc atc ttt acg tta gaa tgt ctc atc 3648 His Leu Asn Trp Val Phe Val Val Ile Phe Thr Leu Glu Cys Leu Ile 1205 1210 1215 aaa atc ttt gct ttg agg caa tac tac ttc acc aat ggc tgg aat tta 3696 Lys Ile Phe Ala Leu Arg Gln Tyr Tyr Phe Thr Asn Gly Trp Asn Leu 1220 1225 1230 ttt ga 3701 Phe 7 1233 PRT Homo sapiens UNSURE (308) Xaa is Leu. Xaa results from a “y” in SEQ ID NO 6. 7 Ser Ile Val Ile Gly Ile Ala Ile Val Ser Tyr Ile Pro Gly Ile Thr 1 5 10 15 Ile Lys Leu Leu Pro Leu Arg Thr Phe Arg Val Phe Arg Ala Leu Lys 20 25 30 Ala Ile Ser Val Val Ser Arg Leu Lys Val Ile Val Gly Ala Leu Leu 35 40 45 Arg Ser Val Lys Lys Leu Val Asn Val Ile Ile Leu Thr Phe Phe Cys 50 55 60 Leu Ser Ile Phe Ala Leu Val Gly Gln Gln Leu Phe Met Gly Ser Leu 65 70 75 80 Asn Leu Lys Cys Ile Ser Arg Asp Cys Lys Asn Ile Ser Asn Pro Glu 85 90 95 Ala Tyr Asp His Cys Phe Glu Lys Lys Glu Asn Ser Pro Glu Phe Lys 100 105 110 Met Cys Gly Ile Trp Met Gly Asn Ser Ala Cys Ser Ile Gln Tyr Glu 115 120 125 Cys Lys His Thr Lys Ile Asn Pro Asp Tyr Asn Tyr Thr Asn Phe Asp 130 135 140 Asn Phe Gly Trp Ser Phe Leu Ala Met Phe Arg Leu Met Thr Gln Asp 145 150 155 160 Ser Trp Glu Lys Leu Tyr Gln Gln Thr Leu Arg Thr Thr Gly Leu Tyr 165 170 175 Ser Val Phe Phe Phe Ile Val Val Ile Phe Leu Gly Ser Phe Tyr Leu 180 185 190 Ile Asn Leu Thr Leu Ala Val Val Thr Met Ala Tyr Glu Glu Gln Asn 195 200 205 Lys Asn Val Ala Ala Glu Ile Glu Ala Lys Glu Lys Met Phe Gln Glu 210 215 220 Ala Gln Gln Leu Leu Lys Glu Glu Lys Glu Ala Leu Val Ala Met Gly 225 230 235 240 Ile Asp Arg Ser Ser Leu Thr Ser Leu Glu Thr Ser Tyr Phe Thr Pro 245 250 255 Lys Lys Arg Lys Leu Phe Gly Asn Lys Lys Arg Lys Ser Phe Phe Leu 260 265 270 Arg Glu Ser Gly Lys Asp Gln Pro Pro Gly Ser Asp Ser Asp Glu Asp 275 280 285 Cys Gln Lys Lys Pro Gln Leu Leu Glu Gln Thr Lys Arg Leu Ser Gln 290 295 300 Asn Leu Ser Xaa Asp His Phe Asp Glu His Gly Asp Pro Leu Gln Arg 305 310 315 320 Gln Arg Ala Leu Ser Ala Val Ser Ile Leu Thr Ile Thr Met Lys Glu 325 330 335 Gln Glu Lys Ser Gln Glu Pro Cys Leu Pro Cys Gly Glu Asn Leu Ala 340 345 350 Ser Lys Tyr Leu Val Trp Asn Cys Cys Pro Gln Trp Leu Cys Val Lys 355 360 365 Lys Val Leu Arg Thr Val Met Thr Asp Pro Phe Thr Glu Leu Ala Ile 370 375 380 Thr Ile Cys Ile Ile Ile Asn Thr Val Phe Leu Ala Met Glu His His 385 390 395 400 Lys Met Glu Ala Ser Phe Glu Lys Met Leu Asn Ile Gly Asn Leu Val 405 410 415 Phe Thr Ser Ile Phe Ile Ala Glu Met Cys Leu Lys Ile Ile Ala Leu 420 425 430 Asp Pro Tyr His Tyr Phe Arg Arg Gly Trp Asn Ile Phe Asp Ser Ile 435 440 445 Val Ala Leu Leu Ser Phe Ala Asp Val Met Asn Cys Val Leu Gln Lys 450 455 460 Arg Ser Trp Pro Phe Leu Arg Ser Phe Arg Val Leu Arg Val Phe Lys 465 470 475 480 Leu Ala Lys Ser Trp Pro Thr Leu Asn Thr Leu Ile Lys Ile Ile Gly 485 490 495 Asn Ser Val Gly Ala Leu Gly Ser Leu Thr Val Val Leu Val Ile Val 500 505 510 Ile Phe Ile Phe Ser Val Val Gly Met Gln Leu Phe Gly Arg Ser Phe 515 520 525 Asn Ser Gln Lys Ser Pro Lys Leu Cys Asn Pro Thr Gly Pro Thr Val 530 535 540 Ser Cys Leu Arg His Trp His Met Gly Asp Phe Trp His Ser Phe Leu 545 550 555 560 Val Val Phe Arg Ile Leu Cys Gly Glu Trp Ile Glu Asn Met Trp Glu 565 570 575 Cys Met Gln Glu Ala Asn Ala Ser Ser Ser Leu Cys Val Ile Val Phe 580 585 590 Ile Leu Ile Thr Val Ile Gly Lys Leu Val Val Leu Asn Leu Phe Ile 595 600 605 Ala Leu Leu Leu Asn Ser Phe Ser Asn Glu Glu Arg Asn Gly Asn Leu 610 615 620 Glu Gly Glu Ala Arg Lys Thr Lys Val Gln Leu Ala Leu Asp Arg Phe 625 630 635 640 Arg Arg Ala Phe Cys Phe Val Arg His Thr Leu Glu His Phe Cys His 645 650 655 Lys Trp Cys Arg Lys Gln Asn Leu Pro Gln Gln Lys Glu Val Ala Gly 660 665 670 Gly Cys Ala Ala Gln Ser Lys Asp Ile Ile Pro Leu Val Met Glu Met 675 680 685 Lys Arg Gly Ser Glu Thr Gln Glu Glu Leu Gly Ile Leu Thr Ser Val 690 695 700 Pro Lys Thr Leu Gly Val Arg His Asp Trp Thr Trp Leu Ala Pro Leu 705 710 715 720 Ala Glu Glu Glu Asp Asp Val Glu Phe Ser Gly Glu Asp Asn Ala Gln 725 730 735 Arg Ile Thr Gln Pro Glu Pro Glu Gln Gln Ala Tyr Glu Leu His Gln 740 745 750 Glu Asn Lys Lys Pro Thr Ser Gln Arg Val Gln Ser Val Glu Ile Asp 755 760 765 Met Phe Ser Glu Asp Glu Pro His Leu Thr Ile Gln Asp Pro Arg Lys 770 775 780 Lys Ser Asp Val Thr Ser Ile Leu Ser Glu Cys Ser Thr Ile Asp Leu 785 790 795 800 Gln Asp Gly Phe Gly Trp Leu Pro Glu Met Val Pro Lys Lys Gln Pro 805 810 815 Glu Arg Cys Leu Pro Lys Gly Phe Gly Cys Cys Phe Pro Cys Cys Ser 820 825 830 Val Asp Lys Arg Lys Pro Pro Trp Val Ile Trp Trp Asn Leu Arg Lys 835 840 845 Thr Cys Tyr Gln Ile Val Lys His Ser Trp Phe Glu Ser Phe Ile Ile 850 855 860 Phe Val Ile Leu Leu Ser Ser Gly Ala Leu Ile Phe Glu Asp Val His 865 870 875 880 Leu Glu Asn Gln Pro Lys Ile Gln Glu Leu Leu Asn Cys Thr Asp Ile 885 890 895 Ile Phe Thr His Ile Phe Ile Leu Glu Met Val Leu Lys Trp Val Ala 900 905 910 Phe Gly Phe Gly Lys Tyr Phe Thr Ser Ala Trp Cys Cys Leu Asp Phe 915 920 925 Ile Ile Val Ile Val Ser Val Thr Thr Leu Ile Asn Leu Met Glu Leu 930 935 940 Lys Ser Phe Arg Thr Leu Arg Ala Leu Arg Pro Leu Arg Ala Leu Ser 945 950 955 960 Gln Phe Glu Gly Met Lys Val Val Val Asn Ala Leu Ile Gly Ala Ile 965 970 975 Pro Ala Ile Leu Asn Val Leu Leu Val Cys Leu Ile Phe Trp Leu Val 980 985 990 Phe Cys Ile Leu Gly Val Tyr Phe Phe Ser Gly Lys Phe Gly Lys Cys 995 1000 1005 Ile Asn Gly Thr Asp Ser Val Ile Asn Tyr Thr Ile Ile Thr Asn Lys 1010 1015 1020 Ser Gln Cys Glu Ser Gly Asn Phe Ser Trp Ile Asn Gln Lys Val Asn 1025 1030 1035 1040 Phe Asp Asn Val Gly Asn Ala Tyr Leu Ala Leu Leu Gln Val Ala Thr 1045 1050 1055 Phe Lys Gly Trp Met Asp Ile Ile Tyr Ala Ala Val Asp Ser Thr Glu 1060 1065 1070 Lys Glu Gln Gln Pro Glu Phe Glu Ser Asn Ser Leu Gly Tyr Ile Tyr 1075 1080 1085 Phe Val Val Phe Ile Ile Phe Gly Ser Phe Phe Thr Leu Asn Leu Phe 1090 1095 1100 Ile Gly Val Ile Ile Asp Asn Phe Asn Gln Gln Gln Lys Lys Leu Gly 1105 1110 1115 1120 Gly Gln Asp Ile Phe Met Thr Glu Glu Gln Lys Lys Tyr Tyr Asn Ala 1125 1130 1135 Met Lys Lys Leu Gly Ser Lys Lys Pro Gln Lys Pro Ile Pro Arg Pro 1140 1145 1150 Leu Asn Lys Cys Gln Gly Leu Val Phe Asp Ile Val Thr Ser Gln Ile 1155 1160 1165 Phe Asp Ile Ile Ile Ile Ser Leu Ile Ile Leu Asn Met Ile Ser Met 1170 1175 1180 Met Ala Glu Ser Tyr Asn Gln Pro Lys Ala Met Lys Ser Ile Leu Asp 1185 1190 1195 1200 His Leu Asn Trp Val Phe Val Val Ile Phe Thr Leu Glu Cys Leu Ile 1205 1210 1215 Lys Ile Phe Ala Leu Arg Gln Tyr Tyr Phe Thr Asn Gly Trp Asn Leu 1220 1225 1230 Phe 8 1243 PRT Homo sapiens partial human NaN amino acid seq. 8 Ser Ile Val Ile Gly Ile Ala Ile Val Ser Tyr Ile Pro Gly Ile Thr 1 5 10 15 Ile Lys Leu Leu Pro Leu Arg Thr Phe Arg Val Phe Arg Ala Leu Lys 20 25 30 Ala Ile Ser Val Val Ser Arg Leu Lys Val Ile Val Gly Ala Leu Leu 35 40 45 Arg Ser Val Lys Lys Leu Val Asn Val Ile Ile Leu Thr Phe Phe Cys 50 55 60 Leu Ser Ile Phe Ala Leu Val Gly Gln Gln Leu Phe Met Gly Ser Leu 65 70 75 80 Asn Leu Lys Cys Ile Ser Arg Asp Cys Lys Asn Ile Ser Asn Pro Glu 85 90 95 Ala Tyr Asp His Cys Phe Glu Lys Lys Glu Asn Ser Pro Glu Phe Lys 100 105 110 Met Cys Gly Ile Trp Met Gly Asn Ser Ala Cys Ser Ile Gln Tyr Glu 115 120 125 Cys Lys His Thr Lys Ile Asn Pro Asp Tyr Asn Tyr Thr Asn Phe Asp 130 135 140 Asn Phe Gly Trp Ser Phe Leu Ala Met Phe Arg Leu Met Thr Gln Asp 145 150 155 160 Ser Trp Glu Lys Leu Tyr Gln Gln Thr Leu Arg Thr Thr Gly Leu Tyr 165 170 175 Ser Val Phe Phe Phe Ile Val Val Ile Phe Leu Gly Ser Phe Tyr Leu 180 185 190 Ile Asn Leu Thr Leu Ala Val Val Thr Met Ala Tyr Glu Glu Gln Asn 195 200 205 Lys Asn Val Ala Ala Glu Ile Glu Ala Lys Glu Lys Met Phe Gln Glu 210 215 220 Ala Gln Gln Leu Leu Lys Glu Glu Lys Glu Ala Leu Val Ala Met Gly 225 230 235 240 Ile Asp Arg Ser Ser Leu Thr Ser Leu Glu Thr Ser Tyr Phe Thr Pro 245 250 255 Lys Lys Arg Lys Leu Phe Gly Asn Lys Lys Arg Lys Ser Phe Phe Leu 260 265 270 Arg Glu Ser Gly Lys Asp Gln Pro Pro Gly Ser Asp Ser Asp Glu Asp 275 280 285 Cys Gln Lys Lys Pro Gln Leu Leu Glu Gln Thr Lys Arg Leu Ser Gln 290 295 300 Asn Leu Ser Leu Asp His Phe Asp Glu His Gly Asp Pro Leu Gln Arg 305 310 315 320 Gln Arg Ala Leu Ser Ala Val Ser Ile Leu Thr Ile Thr Met Lys Glu 325 330 335 Gln Glu Lys Ser Gln Glu Pro Cys Leu Pro Cys Gly Glu Asn Leu Ala 340 345 350 Ser Lys Tyr Leu Val Trp Asn Cys Cys Pro Gln Trp Leu Cys Val Lys 355 360 365 Lys Val Leu Arg Thr Val Met Thr Asp Pro Phe Thr Glu Leu Ala Ile 370 375 380 Thr Ile Cys Ile Ile Ile Asn Thr Val Phe Leu Ala Met Glu His His 385 390 395 400 Lys Met Glu Ala Ser Phe Glu Lys Met Leu Asn Ile Gly Asn Leu Val 405 410 415 Phe Thr Ser Ile Phe Ile Ala Glu Met Cys Leu Lys Ile Ile Ala Leu 420 425 430 Asp Pro Tyr His Tyr Phe Arg Arg Gly Trp Asn Ile Phe Asp Ser Ile 435 440 445 Val Ala Leu Leu Ser Phe Ala Asp Val Met Asn Cys Val Leu Gln Lys 450 455 460 Arg Ser Trp Pro Phe Leu Arg Ser Phe Arg Val Leu Arg Val Phe Lys 465 470 475 480 Leu Ala Lys Ser Trp Pro Thr Leu Asn Thr Leu Ile Lys Ile Ile Gly 485 490 495 Asn Ser Val Gly Ala Leu Gly Ser Leu Thr Val Val Leu Val Ile Val 500 505 510 Ile Phe Ile Phe Ser Val Val Gly Met Gln Leu Phe Gly Arg Ser Phe 515 520 525 Asn Ser Gln Lys Ser Pro Lys Leu Cys Asn Pro Thr Gly Pro Thr Val 530 535 540 Ser Cys Leu Arg His Trp His Met Gly Asp Phe Trp His Ser Phe Leu 545 550 555 560 Val Val Phe Arg Ile Leu Cys Gly Glu Trp Ile Glu Asn Met Trp Glu 565 570 575 Cys Met Gln Glu Ala Asn Ala Ser Ser Ser Leu Cys Val Ile Val Phe 580 585 590 Ile Leu Ile Thr Val Ile Gly Lys Leu Val Val Leu Asn Leu Phe Ile 595 600 605 Ala Leu Leu Leu Asn Ser Phe Ser Asn Glu Glu Arg Asn Gly Asn Leu 610 615 620 Glu Gly Glu Ala Arg Lys Thr Lys Val Gln Leu Ala Leu Asp Arg Phe 625 630 635 640 Arg Arg Ala Phe Cys Phe Val Arg His Thr Leu Glu His Phe Cys His 645 650 655 Lys Trp Cys Arg Lys Gln Asn Leu Pro Gln Gln Lys Glu Val Ala Gly 660 665 670 Gly Cys Ala Ala Gln Ser Lys Asp Ile Ile Pro Leu Val Met Glu Met 675 680 685 Lys Arg Gly Ser Glu Thr Gln Glu Glu Leu Gly Ile Leu Thr Ser Val 690 695 700 Pro Lys Thr Leu Gly Val Arg His Asp Trp Thr Trp Leu Ala Pro Leu 705 710 715 720 Ala Glu Glu Glu Asp Asp Val Glu Phe Ser Gly Glu Asp Asn Ala Gln 725 730 735 Arg Ile Thr Gln Pro Glu Pro Glu Gln Gln Ala Tyr Glu Leu His Gln 740 745 750 Glu Asn Lys Lys Pro Thr Ser Gln Arg Val Gln Ser Val Glu Ile Asp 755 760 765 Met Phe Ser Glu Asp Glu Pro His Leu Thr Ile Gln Asp Pro Arg Lys 770 775 780 Lys Ser Asp Val Thr Ser Ile Leu Ser Glu Cys Ser Thr Ile Asp Leu 785 790 795 800 Gln Asp Gly Phe Gly Trp Leu Pro Glu Met Val Pro Lys Lys Gln Pro 805 810 815 Glu Arg Cys Leu Pro Lys Gly Phe Gly Cys Cys Phe Pro Cys Cys Ser 820 825 830 Val Asp Lys Arg Lys Pro Pro Trp Val Ile Trp Trp Asn Leu Arg Lys 835 840 845 Thr Cys Tyr Gln Ile Val Lys His Ser Trp Phe Glu Ser Phe Ile Ile 850 855 860 Phe Val Ile Leu Leu Ser Ser Gly Ala Leu Ile Phe Glu Asp Val His 865 870 875 880 Leu Glu Asn Gln Pro Lys Ile Gln Glu Leu Leu Asn Cys Thr Asp Ile 885 890 895 Ile Phe Thr His Ile Phe Ile Leu Glu Met Val Leu Lys Trp Val Ala 900 905 910 Phe Gly Phe Gly Lys Tyr Phe Thr Ser Ala Trp Cys Cys Leu Asp Phe 915 920 925 Ile Ile Val Ile Val Ser Val Thr Thr Leu Ile Asn Leu Met Glu Leu 930 935 940 Lys Ser Phe Arg Thr Leu Arg Ala Leu Arg Pro Leu Arg Ala Leu Ser 945 950 955 960 Gln Phe Glu Gly Met Lys Val Val Val Asn Ala Leu Ile Gly Ala Ile 965 970 975 Pro Ala Ile Leu Asn Val Leu Leu Val Cys Leu Ile Phe Trp Leu Val 980 985 990 Phe Cys Ile Leu Gly Val Tyr Phe Phe Ser Gly Lys Phe Gly Lys Cys 995 1000 1005 Ile Asn Gly Thr Asp Ser Val Ile Asn Tyr Thr Ile Ile Thr Asn Lys 1010 1015 1020 Ser Gln Cys Glu Ser Gly Asn Phe Ser Trp Ile Asn Gln Lys Val Asn 1025 1030 1035 1040 Phe Asp Asn Val Gly Asn Ala Tyr Leu Ala Leu Leu Gln Val Ala Thr 1045 1050 1055 Phe Lys Gly Trp Met Asp Ile Ile Tyr Ala Ala Val Asp Ser Thr Glu 1060 1065 1070 Lys Glu Gln Gln Pro Glu Phe Glu Ser Asn Ser Leu Gly Tyr Ile Tyr 1075 1080 1085 Phe Val Val Phe Ile Ile Phe Gly Ser Phe Phe Thr Leu Asn Leu Phe 1090 1095 1100 Ile Gly Val Ile Ile Asp Asn Phe Asn Gln Gln Gln Lys Lys Leu Gly 1105 1110 1115 1120 Gly Gln Asp Ile Phe Met Thr Glu Glu Gln Lys Lys Tyr Tyr Asn Ala 1125 1130 1135 Met Lys Lys Leu Gly Ser Lys Lys Pro Gln Lys Pro Ile Pro Arg Pro 1140 1145 1150 Leu Asn Lys Cys Gln Gly Leu Val Phe Asp Ile Val Thr Ser Gln Ile 1155 1160 1165 Phe Asp Ile Ile Ile Ile Ser Leu Ile Ile Leu Asn Met Ile Ser Met 1170 1175 1180 Met Ala Glu Ser Tyr Asn Gln Pro Lys Ala Met Lys Ser Ile Leu Asp 1185 1190 1195 1200 His Leu Asn Trp Val Phe Val Val Ile Phe Thr Leu Glu Cys Leu Ile 1205 1210 1215 Lys Ile Phe Ala Leu Arg Gln Tyr Tyr Phe Thr Asn Gly Trp Asn Leu 1220 1225 1230 Phe Asp Cys Val Val Val Leu Leu Ser Ile Val 1235 1240 9 20 DNA Artificial Sequence variation (6) r = a or g 9 gacccrtgga attggttgga 20 10 20 DNA Artificial Sequence Description of Artificial Sequence rat NaN forward primer no. 2 10 aatccctgga attggttgga 20 11 20 DNA Artificial Sequence Description of Artificial Sequence rat NaN forward primer no. 3 11 gacccgtgga actggttaga 20 12 20 DNA Artificial Sequence Description of Artificial Sequence rat NaN forward primer no. 4 12 gatctttgga actggcttga 20 13 21 DNA Artificial Sequence Description of Artificial Sequence rat Nan forward primer no. 5 13 aacatagtgc tggagttcag g 21 14 21 DNA Artificial Sequence Description of Artificial Sequence rat NaN forward primer no. 6 14 gtggcctttg gattccggag g 21 15 24 DNA Artificial Sequence Description of Artificial Sequence rat NaN reverse primer no. 1 15 caagaaggcc cagctgaagg tgtc 24 16 24 DNA Artificial Sequence Description of Artificial Sequence rat NaN reverse primer no. 2 16 gaggaatgcc cacgcaaagg aatc 24 17 24 DNA Artificial Sequence Description of Artificial Sequence rat NaN reverse primer no. 3 17 aagaagggac cagccaaagt tgtc 24 18 20 DNA Artificial Sequence Description of Artificial Sequence rat NaN reverse primer no. 4 18 acytccatrc anwcccacat 20 19 20 DNA Artificial Sequence Description of Artificial Sequence rat NaN reverse primer no. 5, r = a or g 19 agraartcna gccarcacca 20 20 19 DNA Artificial Sequence Description of Artificial Sequence rat NaN reverse primer no. 6 20 tctgctgccg agccaggta 19 21 20 DNA Artificial Sequence Description of Artificial Sequence rat NaN reverse primer no. 7 21 ctgagataac tgaaatcgcc 20 22 27 DNA Artificial Sequence Description of Artificial Sequence primer, Marathon AP-1 22 ccatcctaat acgactcact atagggc 27 23 23 DNA Artificial Sequence Description of Artificial Sequence primer, Marathon AP-2 23 actcactata gggctcgagc ggc 23 24 23 DNA Artificial Sequence Description of Artificial Sequence mouse NaN forward primer 24 ccctgctgcg ctcggtgaag aag 23 25 20 DNA Artificial Sequence Description of Artificial Sequence mouse NaN reverse primer 25 gacaaagtag atcccagagg 20 26 17 DNA Artificial Sequence Description of Artificial Sequence human NaN forward primer 26 ctcagtagtt ggcatgc 17 27 24 DNA Artificial Sequence Description of Artificial Sequence human NaN reverse primer 27 ggaaagaagc acgaccacac agtc 24 28 94 PRT Rattus norvegicus C-terminal truncated rat NaN 28 Ala Ala Gly Gln Ala Met Arg Lys Gln Gly Asp Ile Leu Gly Pro Asn 1 5 10 15 Ile His Gln Phe Ser Gln Ser Ser Glu Thr Pro Phe Leu Gly Cys Pro 20 25 30 Gln Gln Arg Thr Cys Val Ser Phe Val Arg Pro Gln Arg Val Leu Arg 35 40 45 Val Pro Trp Phe Pro Ala Trp Arg Thr Val Thr Phe Leu Ser Arg Pro 50 55 60 Arg Ser Ser Glu Ser Ser Ala Trp Leu Gly Leu Val Glu Ser Ser Gly 65 70 75 80 Trp Ser Gly Leu Pro Gly Glu Ser Gly Pro Ser Ser Leu Leu 85 90 29 211 DNA Mus musculus 29 agtttaatgt tgagtgaatt gtggtggtga tttcccactt gaggcctttg tgttaaagcc 60 caatgtgtgt gtgtgtgtgt gtgtgtgtgt gtgtgtgtgt gtgtgtgtgt gtgtgtggtt 120 ggggggtggt ggcagagtct ggtattggta aggtgagagc aatcccagaa cgtccacctg 180 ctcttccatt ttattaatca ggcaggcctc t 211 30 242 DNA Mus musculus unsure (132)..(234) n at positions 132, 159, 178, 184, 203 and 234 = a or c or g or t. 30 gtaagccact ggctcttaac taaaatgctc gttggcatta gaacatttct gagctggggt 60 ggtggtggtg gtggtggtgg tggtggtggt ggtggtggtg gtggtggtgg tgatggtggt 120 ggtggaggtg gnggtggagg tggtggctgt ggtggtggng gtggtggtgg tggtggangt 180 ggangtggtg gcgtggtggt ggnggtggtg gtggaggtgg tggctgtggt ggtngtggtg 240 gc 242 31 200 DNA Mus musculus 31 tgtgcatgct tgattcccag ctcctatggt ctgattactc ggtccttagg agcaaggcca 60 gactgtccac cctgacacac acacacacac acacacacac acacacacac acacacacac 120 acagtgtaga gaattacctc attcttggag tttctctgga aaaggaatgt ctcaaagcca 180 agttcacaga gcaacagctg 200 32 181 DNA Mus musculus 32 tgttagaaac tctaagacaa tgaagcacca tgctggaaat aagagcacaa actctttctt 60 catgcattac ccactgcttg tgctttcacc ttagtgctcg tgctctctct ttctctctct 120 ctctctctct ctctctctct ctctctctct ctctctctct ctctctcttt tttttttttt 180 t 181 33 128 DNA Mus musculus 33 cacacacaca cacacacaca cacacacaca cacacacaca gagaaacact gtcgcagtca 60 tacatataaa gataaataca tcttaaaaaa agaaccatgt gattgagtta taaaatattc 120 caacttat 128 34 200 DNA Mus musculus 34 aggtcatttc ctctgcagtg tgcttggcag gaaaaacttc ctggctattc aagtcagtgc 60 cctgcttgat catccatgta tcacacacac acaaaacaaa caaacaaaca aacaaaaccc 120 tggggaagaa ggaagaggtt aagcacatag gcagagagca gccaggctga ctcagagcaa 180 acacctgatc attcttccat 200 35 158 DNA Mus musculus unsure (119)..(125) n = a or c or g or t. 35 gtgctgggat caaaggcgtg cgccgccacc acgcccggcc cctttttatg tttcaaattt 60 acttttatca tgtgcacgtg tgtgggtgcg tgcatgtgtg tgcgtgcgtg tgcgtgtgng 120 tgtgngtgtg tgtgtgtgtg tgtgtgtgtg tgtgtgtg 158 36 113 DNA Mus musculus 36 cacacacaca cacacacaca cacacacaca cacacacaca cacacacaca cacacacttg 60 catctttgag ttaattggat aggctgagtc ttacaccgga atcatactgt tgc 113 37 200 DNA Mus musculus 37 ccaatgagag actcttgtct caaaaaagcc atggtgtcca gatcctgagg aataacacct 60 aagaatgtgc tctggcctga aaacacacac acacacacac acacacacac acacacacac 120 agttttattt atttatttaa aaaaatatgt ctctaggcat tgctgaaatg tctcctacag 180 gattaagtca accagagcca 200 38 7 PRT Artificial Sequence Description of Artificial Sequence protein seq. basis for rat NaN reverse primers 38 Met Trp Xaa Cys Met Glu Val 1 5 39 22 DNA Artificial Sequence Description of Artificial Sequence rat NaN forward primer 39 ccctgctgcg ctcggtgaag aa 22 40 20 PRT Artificial Sequence Description of Artificial Sequence a.a. seq. used to derive epitope for polyclonal antibody 40 Cys Gly Pro Asn Pro Ala Ser Asn Lys Asp Cys Phe Glu Lys Glu Lys 1 5 10 15 Asp Ser Glu Asp 20 41 5860 DNA Homo sapiens CDS (31)..(5403) full length cDNA sequence for human NaN 41 atctgctcaa gccaggaatc tcgggtgaag atg gat gac aga tgc tac cca gta 54 Met Asp Asp Arg Cys Tyr Pro Val 1 5 atc ttt cca gat gag cgg aat ttc cgc ccc ttc act tcc gac tct ctg 102 Ile Phe Pro Asp Glu Arg Asn Phe Arg Pro Phe Thr Ser Asp Ser Leu 10 15 20 gct gca att gag aag cgg att gcc atc caa aag gag aaa aag aag tct 150 Ala Ala Ile Glu Lys Arg Ile Ala Ile Gln Lys Glu Lys Lys Lys Ser 25 30 35 40 aaa gac cag aca gga gaa gta ccc cag cct cgg cct cag ctt gac cta 198 Lys Asp Gln Thr Gly Glu Val Pro Gln Pro Arg Pro Gln Leu Asp Leu 45 50 55 aag gcc tcc agg aag ttg ccc aag ctc tat ggc gac att cct cgt gag 246 Lys Ala Ser Arg Lys Leu Pro Lys Leu Tyr Gly Asp Ile Pro Arg Glu 60 65 70 ctc ata gga aag cct ctg gaa gac ttg gac cca ttc tac cga aat cat 294 Leu Ile Gly Lys Pro Leu Glu Asp Leu Asp Pro Phe Tyr Arg Asn His 75 80 85 aag aca ttt atg gtg tta aac aga aag agg aca atc tac cgc ttc agt 342 Lys Thr Phe Met Val Leu Asn Arg Lys Arg Thr Ile Tyr Arg Phe Ser 90 95 100 gcc aag cat gcc ttg ttc att ttt ggg cct ttc aat tca atc aga agt 390 Ala Lys His Ala Leu Phe Ile Phe Gly Pro Phe Asn Ser Ile Arg Ser 105 110 115 120 tta gcc att aga gtc tca gtc cat tca ttg ttc agc atg ttc att atc 438 Leu Ala Ile Arg Val Ser Val His Ser Leu Phe Ser Met Phe Ile Ile 125 130 135 ggc acc gtt atc atc aac tgc gtg ttc atg gct aca ggg cct gct aaa 486 Gly Thr Val Ile Ile Asn Cys Val Phe Met Ala Thr Gly Pro Ala Lys 140 145 150 aac agc aac agt aac aat act gac att gca gag tgt gtc ttc act ggg 534 Asn Ser Asn Ser Asn Asn Thr Asp Ile Ala Glu Cys Val Phe Thr Gly 155 160 165 att tat att ttt gaa gct ttg att aaa ata ttg gca aga ggt ttc att 582 Ile Tyr Ile Phe Glu Ala Leu Ile Lys Ile Leu Ala Arg Gly Phe Ile 170 175 180 ctg gat gag ttt tct ttc ctt cga gat cca tgg aac tgg ctg gac tcc 630 Leu Asp Glu Phe Ser Phe Leu Arg Asp Pro Trp Asn Trp Leu Asp Ser 185 190 195 200 att gtc att gga ata gcg att gtg tca tat att cca gga atc acc atc 678 Ile Val Ile Gly Ile Ala Ile Val Ser Tyr Ile Pro Gly Ile Thr Ile 205 210 215 aaa cta ttg ccc ctg cgt acc ttc cgt gtg ttc aga gct ttg aaa gca 726 Lys Leu Leu Pro Leu Arg Thr Phe Arg Val Phe Arg Ala Leu Lys Ala 220 225 230 att tca gta gtt tca cgt ctg aag gtc atc gtg ggg gcc ttg cta cgc 774 Ile Ser Val Val Ser Arg Leu Lys Val Ile Val Gly Ala Leu Leu Arg 235 240 245 tct gtg aag aag ctg gtc aac gtg att atc ctc acc ttc ttt tgc ctc 822 Ser Val Lys Lys Leu Val Asn Val Ile Ile Leu Thr Phe Phe Cys Leu 250 255 260 agc atc ttt gcc ctg gta ggt cag cag ctc ttc atg gga agt ctg aac 870 Ser Ile Phe Ala Leu Val Gly Gln Gln Leu Phe Met Gly Ser Leu Asn 265 270 275 280 ctg aaa tgc atc tcg agg gac tgt aaa aat atc agt aac ccg gaa gct 918 Leu Lys Cys Ile Ser Arg Asp Cys Lys Asn Ile Ser Asn Pro Glu Ala 285 290 295 tat gac cat tgc ttt gaa aag aaa gaa aat tca cct gaa ttc aaa atg 966 Tyr Asp His Cys Phe Glu Lys Lys Glu Asn Ser Pro Glu Phe Lys Met 300 305 310 tgt ggc atc tgg atg ggt aac agt gcc tgt tcc ata caa tat gaa tgt 1014 Cys Gly Ile Trp Met Gly Asn Ser Ala Cys Ser Ile Gln Tyr Glu Cys 315 320 325 aag cac acc aaa att aat cct gac tat aat tat acg aat ttt gac aac 1062 Lys His Thr Lys Ile Asn Pro Asp Tyr Asn Tyr Thr Asn Phe Asp Asn 330 335 340 ttt ggc tgg tct ttt ctt gcc atg ttc cgg ctg atg acc caa gat tcc 1110 Phe Gly Trp Ser Phe Leu Ala Met Phe Arg Leu Met Thr Gln Asp Ser 345 350 355 360 tgg gag aag ctt tat caa cag acc ctg cgt act act ggg ctc tac tca 1158 Trp Glu Lys Leu Tyr Gln Gln Thr Leu Arg Thr Thr Gly Leu Tyr Ser 365 370 375 gtc ttc ttc ttc att gtg gtc att ttc ctg ggc tcc ttc tac ctg att 1206 Val Phe Phe Phe Ile Val Val Ile Phe Leu Gly Ser Phe Tyr Leu Ile 380 385 390 aac tta acc ctg gct gtt gtt acc atg gca tat gag gag cag aac aag 1254 Asn Leu Thr Leu Ala Val Val Thr Met Ala Tyr Glu Glu Gln Asn Lys 395 400 405 aat gta gct gca gag ata gag gcc aag gaa aag atg ttt cag gaa gcc 1302 Asn Val Ala Ala Glu Ile Glu Ala Lys Glu Lys Met Phe Gln Glu Ala 410 415 420 cag cag ctg tta aag gag gaa aag gag gct ctg gtt gcc atg gga att 1350 Gln Gln Leu Leu Lys Glu Glu Lys Glu Ala Leu Val Ala Met Gly Ile 425 430 435 440 gac aga agt tca ctt act tcc ctt gaa aca tca tat ttt acc cca aaa 1398 Asp Arg Ser Ser Leu Thr Ser Leu Glu Thr Ser Tyr Phe Thr Pro Lys 445 450 455 aag aga aag ctc ttt ggt aat aag aaa agg aag tcc ttc ttt ttg aga 1446 Lys Arg Lys Leu Phe Gly Asn Lys Lys Arg Lys Ser Phe Phe Leu Arg 460 465 470 gag tct ggg aaa gac cag cct cct ggg tca gat tct gat gaa gat tgc 1494 Glu Ser Gly Lys Asp Gln Pro Pro Gly Ser Asp Ser Asp Glu Asp Cys 475 480 485 caa aaa aag cca cag ctc cta gag caa acc aaa cga ctg tcc cag aat 1542 Gln Lys Lys Pro Gln Leu Leu Glu Gln Thr Lys Arg Leu Ser Gln Asn 490 495 500 cta tca ctg gac cac ttt gat gag cat gga gat cct ctc caa agg cag 1590 Leu Ser Leu Asp His Phe Asp Glu His Gly Asp Pro Leu Gln Arg Gln 505 510 515 520 aga gca ctg agt gct gtc agc atc ctc acc atc acc atg aag gaa caa 1638 Arg Ala Leu Ser Ala Val Ser Ile Leu Thr Ile Thr Met Lys Glu Gln 525 530 535 gaa aaa tca caa gag cct tgt ctc cct tgt gga gaa aac ctg gca tcc 1686 Glu Lys Ser Gln Glu Pro Cys Leu Pro Cys Gly Glu Asn Leu Ala Ser 540 545 550 aag tac ctc gtg tgg aac tgt tgc ccc cag tgg ctg tgc gtt aag aag 1734 Lys Tyr Leu Val Trp Asn Cys Cys Pro Gln Trp Leu Cys Val Lys Lys 555 560 565 gtc ctg aga act gtg atg act gac ccg ttt act gag ctg gcc atc acc 1782 Val Leu Arg Thr Val Met Thr Asp Pro Phe Thr Glu Leu Ala Ile Thr 570 575 580 atc tgc atc atc atc aac act gtc ttc ttg gcc atg gag cat cac aag 1830 Ile Cys Ile Ile Ile Asn Thr Val Phe Leu Ala Met Glu His His Lys 585 590 595 600 atg gag gcc agt ttt gag aag atg ttg aat ata ggg aat ttg gtt ttc 1878 Met Glu Ala Ser Phe Glu Lys Met Leu Asn Ile Gly Asn Leu Val Phe 605 610 615 act agc att ttt ata gca gaa atg tgc cta aaa atc att gcg ctc gat 1926 Thr Ser Ile Phe Ile Ala Glu Met Cys Leu Lys Ile Ile Ala Leu Asp 620 625 630 ccc tac cac tac ttt cgc cga ggc tgg aac att ttt gac agc att gtt 1974 Pro Tyr His Tyr Phe Arg Arg Gly Trp Asn Ile Phe Asp Ser Ile Val 635 640 645 gct ctt ctg agt ttt gca gat gta atg aac tgt gta ctt caa aag aga 2022 Ala Leu Leu Ser Phe Ala Asp Val Met Asn Cys Val Leu Gln Lys Arg 650 655 660 agc tgg cca ttc ttg cgt tcc ttc aga gtg ctc agg gtc ttc aag tta 2070 Ser Trp Pro Phe Leu Arg Ser Phe Arg Val Leu Arg Val Phe Lys Leu 665 670 675 680 gcc aaa tcc tgg cca act ttg aac aca cta att aag ata atc ggc aac 2118 Ala Lys Ser Trp Pro Thr Leu Asn Thr Leu Ile Lys Ile Ile Gly Asn 685 690 695 tct gtc gga gcc ctt gga agc ctg act gtg gtc ctg gtc att gtg atc 2166 Ser Val Gly Ala Leu Gly Ser Leu Thr Val Val Leu Val Ile Val Ile 700 705 710 ttt att ttc tca gta gtt ggc atg cag ctt ttt ggc cgt agc ttc aat 2214 Phe Ile Phe Ser Val Val Gly Met Gln Leu Phe Gly Arg Ser Phe Asn 715 720 725 tcc caa aag agt cca aaa ctc tgt aac ccg aca ggc ccg aca gtc tca 2262 Ser Gln Lys Ser Pro Lys Leu Cys Asn Pro Thr Gly Pro Thr Val Ser 730 735 740 tgt tta cgg cac tgg cac atg ggg gat ttc tgg cac tcc ttc cta gtg 2310 Cys Leu Arg His Trp His Met Gly Asp Phe Trp His Ser Phe Leu Val 745 750 755 760 gta ttc cgc atc ctc tgc ggg gaa tgg atc gaa aat atg tgg gaa tgt 2358 Val Phe Arg Ile Leu Cys Gly Glu Trp Ile Glu Asn Met Trp Glu Cys 765 770 775 atg caa gaa gcg aat gca tca tca tca ttg tgt gtt att gtc ttc ata 2406 Met Gln Glu Ala Asn Ala Ser Ser Ser Leu Cys Val Ile Val Phe Ile 780 785 790 ttg atc acg gtg ata gga aaa ctt gtg gtg ctc aac ctc ttc att gcc 2454 Leu Ile Thr Val Ile Gly Lys Leu Val Val Leu Asn Leu Phe Ile Ala 795 800 805 tta ctg ctc aat tcc ttt agc aat gag gaa aga aat gga aac tta gaa 2502 Leu Leu Leu Asn Ser Phe Ser Asn Glu Glu Arg Asn Gly Asn Leu Glu 810 815 820 gga gag gcc agg aaa act aaa gtc cag tta gca ctg gat cga ttc cgc 2550 Gly Glu Ala Arg Lys Thr Lys Val Gln Leu Ala Leu Asp Arg Phe Arg 825 830 835 840 cgg gct ttt tgt ttt gtg aga cac act ctt gag cat ttc tgt cac aag 2598 Arg Ala Phe Cys Phe Val Arg His Thr Leu Glu His Phe Cys His Lys 845 850 855 tgg tgc agg aag caa aac tta cca cag caa aaa gag gtg gca gga ggc 2646 Trp Cys Arg Lys Gln Asn Leu Pro Gln Gln Lys Glu Val Ala Gly Gly 860 865 870 tgt gct gca caa agc aaa gac atc att ccc ctg gtc atg gag atg aaa 2694 Cys Ala Ala Gln Ser Lys Asp Ile Ile Pro Leu Val Met Glu Met Lys 875 880 885 agg ggc tca gag acc cag gag gag ctt ggt ata cta acc tct gta cca 2742 Arg Gly Ser Glu Thr Gln Glu Glu Leu Gly Ile Leu Thr Ser Val Pro 890 895 900 aag acc ctg ggc gtc agg cat gat tgg act tgg ttg gca cca ctt gcg 2790 Lys Thr Leu Gly Val Arg His Asp Trp Thr Trp Leu Ala Pro Leu Ala 905 910 915 920 gag gag gaa gat gac gtt gaa ttt tct ggt gaa gat aat gca cag cgc 2838 Glu Glu Glu Asp Asp Val Glu Phe Ser Gly Glu Asp Asn Ala Gln Arg 925 930 935 atc aca caa cct gag cct gaa caa cag gcc tat gag ctc cat cag gag 2886 Ile Thr Gln Pro Glu Pro Glu Gln Gln Ala Tyr Glu Leu His Gln Glu 940 945 950 aac aag aag ccc acg agc cag aga gtt caa agt gtg gaa att gac atg 2934 Asn Lys Lys Pro Thr Ser Gln Arg Val Gln Ser Val Glu Ile Asp Met 955 960 965 ttc tct gaa gat gag cct cat ctg acc ata cag gat ccc cga aag aag 2982 Phe Ser Glu Asp Glu Pro His Leu Thr Ile Gln Asp Pro Arg Lys Lys 970 975 980 tct gat gtt acc agt ata cta tca gaa tgt agc acc att gat ctt cag 3030 Ser Asp Val Thr Ser Ile Leu Ser Glu Cys Ser Thr Ile Asp Leu Gln 985 990 995 1000 gat ggc ttt gga tgg tta cct gag atg gtt ccc aaa aag caa cca gag 3078 Asp Gly Phe Gly Trp Leu Pro Glu Met Val Pro Lys Lys Gln Pro Glu 1005 1010 1015 aga tgt ttg ccc aaa ggc ttt ggt tgc tgc ttt cca tgc tgt agc gtg 3126 Arg Cys Leu Pro Lys Gly Phe Gly Cys Cys Phe Pro Cys Cys Ser Val 1020 1025 1030 gac aag aga aag cct ccc tgg gtc att tgg tgg aac ctg cgg aaa acc 3174 Asp Lys Arg Lys Pro Pro Trp Val Ile Trp Trp Asn Leu Arg Lys Thr 1035 1040 1045 tgc tac caa ata gtg aaa cac agc tgg ttt gag agc ttt att atc ttt 3222 Cys Tyr Gln Ile Val Lys His Ser Trp Phe Glu Ser Phe Ile Ile Phe 1050 1055 1060 gtg att ctg ctg agc agt ggg gca ctg ata ttt gaa gat gtt cac ctt 3270 Val Ile Leu Leu Ser Ser Gly Ala Leu Ile Phe Glu Asp Val His Leu 1065 1070 1075 1080 gag aac caa ccc aaa atc caa gaa tta cta aat tgt act gac att att 3318 Glu Asn Gln Pro Lys Ile Gln Glu Leu Leu Asn Cys Thr Asp Ile Ile 1085 1090 1095 ttt aca cat att ttt atc ctg gag atg gta cta aaa tgg gta gcc ttc 3366 Phe Thr His Ile Phe Ile Leu Glu Met Val Leu Lys Trp Val Ala Phe 1100 1105 1110 gga ttt gga aag tat ttc acc agt gcc tgg tgc tgc ctt gat ttc atc 3414 Gly Phe Gly Lys Tyr Phe Thr Ser Ala Trp Cys Cys Leu Asp Phe Ile 1115 1120 1125 att gtg att gtc tct gtg acc acc ctc att aac tta atg gaa ttg aag 3462 Ile Val Ile Val Ser Val Thr Thr Leu Ile Asn Leu Met Glu Leu Lys 1130 1135 1140 tcc ttc cgg act cta cga gca ctg agg cct ctt cgt gcg ctg tcc cag 3510 Ser Phe Arg Thr Leu Arg Ala Leu Arg Pro Leu Arg Ala Leu Ser Gln 1145 1150 1155 1160 ttt gaa gga atg aag gtg gtg gtc aat gct ctc ata ggt gcc ata cct 3558 Phe Glu Gly Met Lys Val Val Val Asn Ala Leu Ile Gly Ala Ile Pro 1165 1170 1175 gcc att ctg aat gtt ttg ctt gtc tgc ctc att ttc tgg ctc gta ttt 3606 Ala Ile Leu Asn Val Leu Leu Val Cys Leu Ile Phe Trp Leu Val Phe 1180 1185 1190 tgt att ctg gga gta tac ttc ttt tct gga aaa ttt ggg aaa tgc att 3654 Cys Ile Leu Gly Val Tyr Phe Phe Ser Gly Lys Phe Gly Lys Cys Ile 1195 1200 1205 aat gga aca gac tca gtt ata aat tat acc atc att aca aat aaa agt 3702 Asn Gly Thr Asp Ser Val Ile Asn Tyr Thr Ile Ile Thr Asn Lys Ser 1210 1215 1220 caa tgt gaa agt ggc aat ttc tct tgg atc aac cag aaa gtc aac ttt 3750 Gln Cys Glu Ser Gly Asn Phe Ser Trp Ile Asn Gln Lys Val Asn Phe 1225 1230 1235 1240 gac aat gtg gga aat gct tac ctc gct ctg ctg caa gtg gca aca ttt 3798 Asp Asn Val Gly Asn Ala Tyr Leu Ala Leu Leu Gln Val Ala Thr Phe 1245 1250 1255 aag ggc tgg atg gat att ata tat gca gct gtt gat tcc aca gag aaa 3846 Lys Gly Trp Met Asp Ile Ile Tyr Ala Ala Val Asp Ser Thr Glu Lys 1260 1265 1270 gaa caa cag cca gag ttt gag agc aat tca ctc ggt tac att tac ttc 3894 Glu Gln Gln Pro Glu Phe Glu Ser Asn Ser Leu Gly Tyr Ile Tyr Phe 1275 1280 1285 gta gtc ttt atc atc ttt ggc tca ttc ttc act ctg aat ctc ttc att 3942 Val Val Phe Ile Ile Phe Gly Ser Phe Phe Thr Leu Asn Leu Phe Ile 1290 1295 1300 ggc gtt atc att gac aac ttc aac caa cag cag aaa aag tta ggt ggc 3990 Gly Val Ile Ile Asp Asn Phe Asn Gln Gln Gln Lys Lys Leu Gly Gly 1305 1310 1315 1320 caa gac att ttt atg aca gaa gaa cag aag aaa tac tat aat gca atg 4038 Gln Asp Ile Phe Met Thr Glu Glu Gln Lys Lys Tyr Tyr Asn Ala Met 1325 1330 1335 aaa aaa tta gga tcc aaa aaa cct caa aaa ccc att cca cgg cct ctg 4086 Lys Lys Leu Gly Ser Lys Lys Pro Gln Lys Pro Ile Pro Arg Pro Leu 1340 1345 1350 aac aaa tgt caa ggt ctc gtg ttc gac ata gtc aca agc cag atc ttt 4134 Asn Lys Cys Gln Gly Leu Val Phe Asp Ile Val Thr Ser Gln Ile Phe 1355 1360 1365 gac atc atc atc ata agt ctc att atc cta aac atg att agc atg atg 4182 Asp Ile Ile Ile Ile Ser Leu Ile Ile Leu Asn Met Ile Ser Met Met 1370 1375 1380 gct gaa tca tac aac caa ccc aaa gcc atg aaa tcc atc ctt gac cat 4230 Ala Glu Ser Tyr Asn Gln Pro Lys Ala Met Lys Ser Ile Leu Asp His 1385 1390 1395 1400 ctc aac tgg gtc ttt gtg gtc atc ttt acg tta gaa tgt ctc atc aaa 4278 Leu Asn Trp Val Phe Val Val Ile Phe Thr Leu Glu Cys Leu Ile Lys 1405 1410 1415 atc ttt gct ttg agg caa tac tac ttc acc aat ggc tgg aat tta ttt 4326 Ile Phe Ala Leu Arg Gln Tyr Tyr Phe Thr Asn Gly Trp Asn Leu Phe 1420 1425 1430 gac tgt gtg gtc gtg ctt ctt tcc att gtt agt aca atg att tct acc 4374 Asp Cys Val Val Val Leu Leu Ser Ile Val Ser Thr Met Ile Ser Thr 1435 1440 1445 ttg gaa aat cag gag cac att cct ttc cct ccg acg ctc ttc aga att 4422 Leu Glu Asn Gln Glu His Ile Pro Phe Pro Pro Thr Leu Phe Arg Ile 1450 1455 1460 gtc cgc ttg gct cgg att ggc cga atc ctg agg ctt gtc cgg gct gca 4470 Val Arg Leu Ala Arg Ile Gly Arg Ile Leu Arg Leu Val Arg Ala Ala 1465 1470 1475 1480 cga gga atc agg act ctc ctc ttt gct ctg atg atg tcg ctt cct tct 4518 Arg Gly Ile Arg Thr Leu Leu Phe Ala Leu Met Met Ser Leu Pro Ser 1485 1490 1495 ctg ttc aac att ggt ctt cta ctc ttt ctg att atg ttt atc tat gcc 4566 Leu Phe Asn Ile Gly Leu Leu Leu Phe Leu Ile Met Phe Ile Tyr Ala 1500 1505 1510 att ctg ggt atg aac tgg ttt tcc aaa gtg aat cca gag tct gga atc 4614 Ile Leu Gly Met Asn Trp Phe Ser Lys Val Asn Pro Glu Ser Gly Ile 1515 1520 1525 gat gac ata ttc aac ttc aag act ttt gcc agc agc atg ctc tgt ctc 4662 Asp Asp Ile Phe Asn Phe Lys Thr Phe Ala Ser Ser Met Leu Cys Leu 1530 1535 1540 ttc cag ata agc aca tca gca ggt tgg gat tcc ctg ctc agc ccc atg 4710 Phe Gln Ile Ser Thr Ser Ala Gly Trp Asp Ser Leu Leu Ser Pro Met 1545 1550 1555 1560 ctg cga tca aaa gaa tca tgt aac tct tcc tca gaa aac tgc cac ctc 4758 Leu Arg Ser Lys Glu Ser Cys Asn Ser Ser Ser Glu Asn Cys His Leu 1565 1570 1575 cct ggc ata gcc aca tcc tac ttt gtc agt tac att atc atc tcc ttt 4806 Pro Gly Ile Ala Thr Ser Tyr Phe Val Ser Tyr Ile Ile Ile Ser Phe 1580 1585 1590 ctc att gtt gtc aac atg tac att gct gtg att tta gag aac ttc aat 4854 Leu Ile Val Val Asn Met Tyr Ile Ala Val Ile Leu Glu Asn Phe Asn 1595 1600 1605 aca gcc act gaa gaa agt gag gac cct ttg ggt gaa gat gac ttt gac 4902 Thr Ala Thr Glu Glu Ser Glu Asp Pro Leu Gly Glu Asp Asp Phe Asp 1610 1615 1620 ata ttt tat gaa gtg tgg gaa aag ttt gac cca gaa gca aca caa ttt 4950 Ile Phe Tyr Glu Val Trp Glu Lys Phe Asp Pro Glu Ala Thr Gln Phe 1625 1630 1635 1640 atc aaa tat tct gcc ctt tct gac ttt gct gat gcc ttg cct gag cct 4998 Ile Lys Tyr Ser Ala Leu Ser Asp Phe Ala Asp Ala Leu Pro Glu Pro 1645 1650 1655 ttg cgt gtc gca aag cca aat aaa tat caa ttt cta gta atg gac ttg 5046 Leu Arg Val Ala Lys Pro Asn Lys Tyr Gln Phe Leu Val Met Asp Leu 1660 1665 1670 ccc atg gtg agt gaa gat cgc ctc cac tgc atg gat att ctt ttc gcc 5094 Pro Met Val Ser Glu Asp Arg Leu His Cys Met Asp Ile Leu Phe Ala 1675 1680 1685 ttc acc gct agg gta ctc ggt ggc tct gat ggc cta gat agt atg aaa 5142 Phe Thr Ala Arg Val Leu Gly Gly Ser Asp Gly Leu Asp Ser Met Lys 1690 1695 1700 gca atg atg gaa gag aag ttc atg gaa gcc aat cct ctc aag aag ttg 5190 Ala Met Met Glu Glu Lys Phe Met Glu Ala Asn Pro Leu Lys Lys Leu 1705 1710 1715 1720 tat gaa ccc ata gtc acc acc acc aag aga aag gaa gag gaa aga ggt 5238 Tyr Glu Pro Ile Val Thr Thr Thr Lys Arg Lys Glu Glu Glu Arg Gly 1725 1730 1735 gct gct att att caa aag gcc ttt cga aag tac atg atg aag gtg acc 5286 Ala Ala Ile Ile Gln Lys Ala Phe Arg Lys Tyr Met Met Lys Val Thr 1740 1745 1750 aag ggt gac caa ggt gac caa aat gac ttg gaa aac ggg cct cat tca 5334 Lys Gly Asp Gln Gly Asp Gln Asn Asp Leu Glu Asn Gly Pro His Ser 1755 1760 1765 cca ctc cag act ctt tgc aat gga gac ttg tct agc ttt ggg gtg gcc 5382 Pro Leu Gln Thr Leu Cys Asn Gly Asp Leu Ser Ser Phe Gly Val Ala 1770 1775 1780 aag ggc aag gtc cac tgt gac tgagccctca cctccacgcc tacctcatag 5433 Lys Gly Lys Val His Cys Asp 1785 1790 cttcacagcc ttgccttcag cctctgagct ccaggggtca gcagcttagt gtatcaacag 5493 ggagtggatt caccaaatta gccattccat tttcttttct ggctaaaata aatgatattt 5553 caatttcatt ttaaatgata cttacagaga tataagataa ggctacttga caaccagtgg 5613 tactattata ataaggaaga agacaccagg aaggactgta aaaggacata ccaattttag 5673 gattgaaata gttcaggccg ggcgcagtgg ctcatgcctg taatcccagc actttgagag 5733 gccaaggcag gtggatcacg aggtcaagag atcgagacca tcctggccaa catgatgaaa 5793 ctccgtctct ctaaaaatac aaaaattagc tgggcatggt ggcgtgcgcc tgtagtccca 5853 ctacttg 5860 42 1791 PRT Homo sapiens 42 Met Asp Asp Arg Cys Tyr Pro Val Ile Phe Pro Asp Glu Arg Asn Phe 1 5 10 15 Arg Pro Phe Thr Ser Asp Ser Leu Ala Ala Ile Glu Lys Arg Ile Ala 20 25 30 Ile Gln Lys Glu Lys Lys Lys Ser Lys Asp Gln Thr Gly Glu Val Pro 35 40 45 Gln Pro Arg Pro Gln Leu Asp Leu Lys Ala Ser Arg Lys Leu Pro Lys 50 55 60 Leu Tyr Gly Asp Ile Pro Arg Glu Leu Ile Gly Lys Pro Leu Glu Asp 65 70 75 80 Leu Asp Pro Phe Tyr Arg Asn His Lys Thr Phe Met Val Leu Asn Arg 85 90 95 Lys Arg Thr Ile Tyr Arg Phe Ser Ala Lys His Ala Leu Phe Ile Phe 100 105 110 Gly Pro Phe Asn Ser Ile Arg Ser Leu Ala Ile Arg Val Ser Val His 115 120 125 Ser Leu Phe Ser Met Phe Ile Ile Gly Thr Val Ile Ile Asn Cys Val 130 135 140 Phe Met Ala Thr Gly Pro Ala Lys Asn Ser Asn Ser Asn Asn Thr Asp 145 150 155 160 Ile Ala Glu Cys Val Phe Thr Gly Ile Tyr Ile Phe Glu Ala Leu Ile 165 170 175 Lys Ile Leu Ala Arg Gly Phe Ile Leu Asp Glu Phe Ser Phe Leu Arg 180 185 190 Asp Pro Trp Asn Trp Leu Asp Ser Ile Val Ile Gly Ile Ala Ile Val 195 200 205 Ser Tyr Ile Pro Gly Ile Thr Ile Lys Leu Leu Pro Leu Arg Thr Phe 210 215 220 Arg Val Phe Arg Ala Leu Lys Ala Ile Ser Val Val Ser Arg Leu Lys 225 230 235 240 Val Ile Val Gly Ala Leu Leu Arg Ser Val Lys Lys Leu Val Asn Val 245 250 255 Ile Ile Leu Thr Phe Phe Cys Leu Ser Ile Phe Ala Leu Val Gly Gln 260 265 270 Gln Leu Phe Met Gly Ser Leu Asn Leu Lys Cys Ile Ser Arg Asp Cys 275 280 285 Lys Asn Ile Ser Asn Pro Glu Ala Tyr Asp His Cys Phe Glu Lys Lys 290 295 300 Glu Asn Ser Pro Glu Phe Lys Met Cys Gly Ile Trp Met Gly Asn Ser 305 310 315 320 Ala Cys Ser Ile Gln Tyr Glu Cys Lys His Thr Lys Ile Asn Pro Asp 325 330 335 Tyr Asn Tyr Thr Asn Phe Asp Asn Phe Gly Trp Ser Phe Leu Ala Met 340 345 350 Phe Arg Leu Met Thr Gln Asp Ser Trp Glu Lys Leu Tyr Gln Gln Thr 355 360 365 Leu Arg Thr Thr Gly Leu Tyr Ser Val Phe Phe Phe Ile Val Val Ile 370 375 380 Phe Leu Gly Ser Phe Tyr Leu Ile Asn Leu Thr Leu Ala Val Val Thr 385 390 395 400 Met Ala Tyr Glu Glu Gln Asn Lys Asn Val Ala Ala Glu Ile Glu Ala 405 410 415 Lys Glu Lys Met Phe Gln Glu Ala Gln Gln Leu Leu Lys Glu Glu Lys 420 425 430 Glu Ala Leu Val Ala Met Gly Ile Asp Arg Ser Ser Leu Thr Ser Leu 435 440 445 Glu Thr Ser Tyr Phe Thr Pro Lys Lys Arg Lys Leu Phe Gly Asn Lys 450 455 460 Lys Arg Lys Ser Phe Phe Leu Arg Glu Ser Gly Lys Asp Gln Pro Pro 465 470 475 480 Gly Ser Asp Ser Asp Glu Asp Cys Gln Lys Lys Pro Gln Leu Leu Glu 485 490 495 Gln Thr Lys Arg Leu Ser Gln Asn Leu Ser Leu Asp His Phe Asp Glu 500 505 510 His Gly Asp Pro Leu Gln Arg Gln Arg Ala Leu Ser Ala Val Ser Ile 515 520 525 Leu Thr Ile Thr Met Lys Glu Gln Glu Lys Ser Gln Glu Pro Cys Leu 530 535 540 Pro Cys Gly Glu Asn Leu Ala Ser Lys Tyr Leu Val Trp Asn Cys Cys 545 550 555 560 Pro Gln Trp Leu Cys Val Lys Lys Val Leu Arg Thr Val Met Thr Asp 565 570 575 Pro Phe Thr Glu Leu Ala Ile Thr Ile Cys Ile Ile Ile Asn Thr Val 580 585 590 Phe Leu Ala Met Glu His His Lys Met Glu Ala Ser Phe Glu Lys Met 595 600 605 Leu Asn Ile Gly Asn Leu Val Phe Thr Ser Ile Phe Ile Ala Glu Met 610 615 620 Cys Leu Lys Ile Ile Ala Leu Asp Pro Tyr His Tyr Phe Arg Arg Gly 625 630 635 640 Trp Asn Ile Phe Asp Ser Ile Val Ala Leu Leu Ser Phe Ala Asp Val 645 650 655 Met Asn Cys Val Leu Gln Lys Arg Ser Trp Pro Phe Leu Arg Ser Phe 660 665 670 Arg Val Leu Arg Val Phe Lys Leu Ala Lys Ser Trp Pro Thr Leu Asn 675 680 685 Thr Leu Ile Lys Ile Ile Gly Asn Ser Val Gly Ala Leu Gly Ser Leu 690 695 700 Thr Val Val Leu Val Ile Val Ile Phe Ile Phe Ser Val Val Gly Met 705 710 715 720 Gln Leu Phe Gly Arg Ser Phe Asn Ser Gln Lys Ser Pro Lys Leu Cys 725 730 735 Asn Pro Thr Gly Pro Thr Val Ser Cys Leu Arg His Trp His Met Gly 740 745 750 Asp Phe Trp His Ser Phe Leu Val Val Phe Arg Ile Leu Cys Gly Glu 755 760 765 Trp Ile Glu Asn Met Trp Glu Cys Met Gln Glu Ala Asn Ala Ser Ser 770 775 780 Ser Leu Cys Val Ile Val Phe Ile Leu Ile Thr Val Ile Gly Lys Leu 785 790 795 800 Val Val Leu Asn Leu Phe Ile Ala Leu Leu Leu Asn Ser Phe Ser Asn 805 810 815 Glu Glu Arg Asn Gly Asn Leu Glu Gly Glu Ala Arg Lys Thr Lys Val 820 825 830 Gln Leu Ala Leu Asp Arg Phe Arg Arg Ala Phe Cys Phe Val Arg His 835 840 845 Thr Leu Glu His Phe Cys His Lys Trp Cys Arg Lys Gln Asn Leu Pro 850 855 860 Gln Gln Lys Glu Val Ala Gly Gly Cys Ala Ala Gln Ser Lys Asp Ile 865 870 875 880 Ile Pro Leu Val Met Glu Met Lys Arg Gly Ser Glu Thr Gln Glu Glu 885 890 895 Leu Gly Ile Leu Thr Ser Val Pro Lys Thr Leu Gly Val Arg His Asp 900 905 910 Trp Thr Trp Leu Ala Pro Leu Ala Glu Glu Glu Asp Asp Val Glu Phe 915 920 925 Ser Gly Glu Asp Asn Ala Gln Arg Ile Thr Gln Pro Glu Pro Glu Gln 930 935 940 Gln Ala Tyr Glu Leu His Gln Glu Asn Lys Lys Pro Thr Ser Gln Arg 945 950 955 960 Val Gln Ser Val Glu Ile Asp Met Phe Ser Glu Asp Glu Pro His Leu 965 970 975 Thr Ile Gln Asp Pro Arg Lys Lys Ser Asp Val Thr Ser Ile Leu Ser 980 985 990 Glu Cys Ser Thr Ile Asp Leu Gln Asp Gly Phe Gly Trp Leu Pro Glu 995 1000 1005 Met Val Pro Lys Lys Gln Pro Glu Arg Cys Leu Pro Lys Gly Phe Gly 1010 1015 1020 Cys Cys Phe Pro Cys Cys Ser Val Asp Lys Arg Lys Pro Pro Trp Val 1025 1030 1035 1040 Ile Trp Trp Asn Leu Arg Lys Thr Cys Tyr Gln Ile Val Lys His Ser 1045 1050 1055 Trp Phe Glu Ser Phe Ile Ile Phe Val Ile Leu Leu Ser Ser Gly Ala 1060 1065 1070 Leu Ile Phe Glu Asp Val His Leu Glu Asn Gln Pro Lys Ile Gln Glu 1075 1080 1085 Leu Leu Asn Cys Thr Asp Ile Ile Phe Thr His Ile Phe Ile Leu Glu 1090 1095 1100 Met Val Leu Lys Trp Val Ala Phe Gly Phe Gly Lys Tyr Phe Thr Ser 1105 1110 1115 1120 Ala Trp Cys Cys Leu Asp Phe Ile Ile Val Ile Val Ser Val Thr Thr 1125 1130 1135 Leu Ile Asn Leu Met Glu Leu Lys Ser Phe Arg Thr Leu Arg Ala Leu 1140 1145 1150 Arg Pro Leu Arg Ala Leu Ser Gln Phe Glu Gly Met Lys Val Val Val 1155 1160 1165 Asn Ala Leu Ile Gly Ala Ile Pro Ala Ile Leu Asn Val Leu Leu Val 1170 1175 1180 Cys Leu Ile Phe Trp Leu Val Phe Cys Ile Leu Gly Val Tyr Phe Phe 1185 1190 1195 1200 Ser Gly Lys Phe Gly Lys Cys Ile Asn Gly Thr Asp Ser Val Ile Asn 1205 1210 1215 Tyr Thr Ile Ile Thr Asn Lys Ser Gln Cys Glu Ser Gly Asn Phe Ser 1220 1225 1230 Trp Ile Asn Gln Lys Val Asn Phe Asp Asn Val Gly Asn Ala Tyr Leu 1235 1240 1245 Ala Leu Leu Gln Val Ala Thr Phe Lys Gly Trp Met Asp Ile Ile Tyr 1250 1255 1260 Ala Ala Val Asp Ser Thr Glu Lys Glu Gln Gln Pro Glu Phe Glu Ser 1265 1270 1275 1280 Asn Ser Leu Gly Tyr Ile Tyr Phe Val Val Phe Ile Ile Phe Gly Ser 1285 1290 1295 Phe Phe Thr Leu Asn Leu Phe Ile Gly Val Ile Ile Asp Asn Phe Asn 1300 1305 1310 Gln Gln Gln Lys Lys Leu Gly Gly Gln Asp Ile Phe Met Thr Glu Glu 1315 1320 1325 Gln Lys Lys Tyr Tyr Asn Ala Met Lys Lys Leu Gly Ser Lys Lys Pro 1330 1335 1340 Gln Lys Pro Ile Pro Arg Pro Leu Asn Lys Cys Gln Gly Leu Val Phe 1345 1350 1355 1360 Asp Ile Val Thr Ser Gln Ile Phe Asp Ile Ile Ile Ile Ser Leu Ile 1365 1370 1375 Ile Leu Asn Met Ile Ser Met Met Ala Glu Ser Tyr Asn Gln Pro Lys 1380 1385 1390 Ala Met Lys Ser Ile Leu Asp His Leu Asn Trp Val Phe Val Val Ile 1395 1400 1405 Phe Thr Leu Glu Cys Leu Ile Lys Ile Phe Ala Leu Arg Gln Tyr Tyr 1410 1415 1420 Phe Thr Asn Gly Trp Asn Leu Phe Asp Cys Val Val Val Leu Leu Ser 1425 1430 1435 1440 Ile Val Ser Thr Met Ile Ser Thr Leu Glu Asn Gln Glu His Ile Pro 1445 1450 1455 Phe Pro Pro Thr Leu Phe Arg Ile Val Arg Leu Ala Arg Ile Gly Arg 1460 1465 1470 Ile Leu Arg Leu Val Arg Ala Ala Arg Gly Ile Arg Thr Leu Leu Phe 1475 1480 1485 Ala Leu Met Met Ser Leu Pro Ser Leu Phe Asn Ile Gly Leu Leu Leu 1490 1495 1500 Phe Leu Ile Met Phe Ile Tyr Ala Ile Leu Gly Met Asn Trp Phe Ser 1505 1510 1515 1520 Lys Val Asn Pro Glu Ser Gly Ile Asp Asp Ile Phe Asn Phe Lys Thr 1525 1530 1535 Phe Ala Ser Ser Met Leu Cys Leu Phe Gln Ile Ser Thr Ser Ala Gly 1540 1545 1550 Trp Asp Ser Leu Leu Ser Pro Met Leu Arg Ser Lys Glu Ser Cys Asn 1555 1560 1565 Ser Ser Ser Glu Asn Cys His Leu Pro Gly Ile Ala Thr Ser Tyr Phe 1570 1575 1580 Val Ser Tyr Ile Ile Ile Ser Phe Leu Ile Val Val Asn Met Tyr Ile 1585 1590 1595 1600 Ala Val Ile Leu Glu Asn Phe Asn Thr Ala Thr Glu Glu Ser Glu Asp 1605 1610 1615 Pro Leu Gly Glu Asp Asp Phe Asp Ile Phe Tyr Glu Val Trp Glu Lys 1620 1625 1630 Phe Asp Pro Glu Ala Thr Gln Phe Ile Lys Tyr Ser Ala Leu Ser Asp 1635 1640 1645 Phe Ala Asp Ala Leu Pro Glu Pro Leu Arg Val Ala Lys Pro Asn Lys 1650 1655 1660 Tyr Gln Phe Leu Val Met Asp Leu Pro Met Val Ser Glu Asp Arg Leu 1665 1670 1675 1680 His Cys Met Asp Ile Leu Phe Ala Phe Thr Ala Arg Val Leu Gly Gly 1685 1690 1695 Ser Asp Gly Leu Asp Ser Met Lys Ala Met Met Glu Glu Lys Phe Met 1700 1705 1710 Glu Ala Asn Pro Leu Lys Lys Leu Tyr Glu Pro Ile Val Thr Thr Thr 1715 1720 1725 Lys Arg Lys Glu Glu Glu Arg Gly Ala Ala Ile Ile Gln Lys Ala Phe 1730 1735 1740 Arg Lys Tyr Met Met Lys Val Thr Lys Gly Asp Gln Gly Asp Gln Asn 1745 1750 1755 1760 Asp Leu Glu Asn Gly Pro His Ser Pro Leu Gln Thr Leu Cys Asn Gly 1765 1770 1775 Asp Leu Ser Ser Phe Gly Val Ala Lys Gly Lys Val His Cys Asp 1780 1785 1790 43 8 PRT Artificial Sequence Description of Artificial Sequence protein seq. basis for rat NaN reverse primer no. 5 43 Ala Trp Cys Trp Leu Asp Phe Leu 1 5 44 23 DNA Artificial Sequence human NaN reverse primer 44 gtgccgtaaa catgagactg tcg 23 

1. An isolated nucleic acid molecule selected from the group consisting of a nucleic acid molecule comprising the sequence shown in FIG. 1, FIG. 7A, FIG. 8A or 11A, a nucleic acid molecule which encodes the amino acid sequence of FIG. 2, FIG. 7B, FIG. 8B or FIG. 11B, or allelic variants of said sequences, and a nucleic acid molecule that hybridizes to one of the foregoing sequences under stringent conditions.
 2. The isolated nucleic acid of claim 1, wherein the nucleic acid encodes a voltage gated Na⁺ channel that is preferentially expressed in dorsal root ganglia or trigeminal ganglia.
 3. The isolated nucleic acid of claim 2, wherein the nucleic acid encodes the human NaN sodium channel.
 4. An expression vector comprising the isolated nucleic acid of any of claims 1 to 3, alone or together with appropriate regulatory and expression control elements.
 5. A host cell transformed with the expression vector of claim
 4. 6. A Na⁺ channel encoded by the isolated nucleic acid of any of claims 1 to
 3. 7. The Na⁺ channel of claim 6, having the amino acid sequence of FIG.
 2. 8. A protein molecule having the amino acid sequence of FIG. 2, FIG. 7B, FIG. 8B, FIG. 11B or a peptide fragment thereof.
 9. A protein encoded by the isolated nucleic acid of claim
 6. 10. A method to identify an agent that modulates the activity of the Na⁺ channel of claim 6, comprising the steps of bringing the agent into contact with a cell that expresses the Na⁺ channel on its surface and measuring any resultant changes in the sodium current, resultant change in membrane potential or change in intracellular Na⁺.
 11. The method of claim 10, wherein the measuring step is accomplished with voltage clamp measurements or measurement of membrane potential.
 12. The method of claim 10, wherein the measuring step is accomplished by measuring the level of intracellular sodium.
 13. The method of claim 10, wherein the measuring step is accomplished by measuring sodium influx.
 14. The method of claim 13, wherein the sodium influx is measured using ²²Na or ⁸⁶Rb.
 15. A method to identify an agent that modulates the transcription or translation of mRNA encoding the Na⁺ channel of claim 6, comprising the steps of bringing the agent into contact with a cell that expresses the Na⁺ channel on its surface and measuring the resultant level of expression of the Na⁺ channel.
 16. A method to treat pain, paraesthesia and/or hyperexcitability phenomena in an animal or human subject by administering an effective amount of an agent capable of altering Na⁺ current flow through NaN channels in DRG or trigeminal neurons.
 17. A method to treat pain, paraesthesia and/or hyperexcitability phenomena in an animal or human subject by administering an effective amount of an agent capable of modulating the transcription or translation of mRNA encoding the Na⁺ channel of claim
 6. 18. An isolated nucleic acid that is antisense to the nucleic acid of claim 1 and of sufficient length to modulate the expression of NaN channel in a cell containing the mRNA.
 19. A scintigraphic method to image the loci of pain generation or provide a measure of the level of pain associated with DRG or trigeminal neuron mediated hyperexcitability in an animal or human subject by administering labeled monoclonal antibodies or other labeled ligands specific for the NaN Na⁺ channel.
 20. A method to identify tissues, cells and cell types that express the NaN sodium channel, comprising the step of detecting NaN on the cell surface or intracellularly.
 21. A method to identify tissues, cells and cell types that express NaN comprising the step of detecting the presence therein of NaN encoding mRNA.
 22. A method of producing a transformed cell that expresses an exogenous NaN encoding nucleic acid, comprising the step of transforming the cell with an expression vector comprising the isolated nucleic acid of any of claims 1 to 3, together with appropriate regulatory and expression control elements.
 23. An isolated antibody specific for the NaN channel or polypeptide fragment thereof.
 24. The isolated antibody of claim 23, wherein the antibody is labeled.
 25. A method of producing recombinant NaN protein, comprising the step of culturing the transformed host of claim 5 under conditions in which the NaN sodium channel or protein is expressed, and recovering the NaN protein.
 26. A therapeutic composition comprising an effective amount of an agent capable of altering, such as by increasing or decreasing, the rapidly repriming current flow in axotomized, inflamed or otherwise injured DRG neurons.
 27. A method to treat acute pain or acute or chronic neuropathic or inflammatory pain and hyperexcitability phenomena in an animal or a human patient by administering the therapeutic composition of claim
 26. 28. A method to screen candidate compounds for use in treating pain and hyperexcitability phenomena by testing their ability to upregulate or downregulate the NaN channel mRNA in axotomized, inflamed or otherwise injured DRG neurons.
 29. A method of screening for a mutant NaN allele in a nucleic acid sample comprising the step of hybridizing an intronic microsattelite sequence of Example 20 to the sample under conditions of sufficient stringency to produce a clear signal. 